I need a build a .NET project from a local DLLs present in a folder

Question

Have project .cs file in following format

│

├───RecordingBot.Console

│   │   .env

│   │   .env-template

│   │   Program.cs

│   

│   │

│   └───Properties

│           AssemblyInfo.cs

│           launchSettings.json

│

├───RecordingBot.Model

│   

│   ├───Constants

│   │       AudioConstants.cs

│   │       AzureConstants.cs

│   │       BotConstants.cs

│   │       DatabaseConstants.cs

│   │       HttpRouteConstants.cs

│   │

│   ├───Contracts

│   │       IInitializable.cs

│   │

│   ├───Extension

│   │       ParticipantExtension.cs

│   │

│   ├───Models

│   │       BotEventData.cs

│   │       JoinCallBody.cs

│   │       JoinURLResponse.cs

│   │       Meeting.cs

│   │       ParticipantData.cs

│   │

│   ├───Properties

│   │       AssemblyInfo.cs

│   │

│   └───Settings

│           RecordingBotSettings.cs

│           WavFileSettings.cs

│

├───RecordingBot.Services

    │   app.config

    │

    ├───Authentication

    │       AuthenticationProvider.cs

    │       AuthenticationWrapper.cs

    │       UserPasswordAuthenticationProvider.cs

    │

    ├───Bot

    │       BotMediaStream.cs

    │       BotService.cs

    │       CallHandler.cs

    │       ExceptionExtensions.cs

    │       HeartbeatHandler.cs

    │       LRUCache.cs

    │

    ├───Contract

    │       IAzureSettings.cs

    │       IBotService.cs

    │       IEventGridPublisher.cs

    │       IInitializable.cs

    │       IMediaStream.cs

    │       IServiceHost.cs

    │

    ├───Http

    │   │   ExceptionLogger.cs

    │   │   HttpConfigurationInitializer.cs

    │   │   LoggingMessageHandler.cs

    │   │

    │   └───Controllers

    │           DemoController.cs

    │           JoinCallController.cs

    │           PlatformCallController.cs

    │

    ├───Media

    │       AudioProcessor.cs

    │       MediaStream.cs

    │       SerializableAudioMediaBuffer.cs

    │       SerializableQualityOfExperienceData.cs

    │

    ├───Properties

    │       AssemblyInfo.cs

    │

    ├───ServiceSetup

    │       AppHost.cs

    │       AudioSettings.cs

    │       AzureSettings.cs

    │       ServiceHost.cs

    │       ServicesExtension.cs

    │       WavSettings.cs

    │

    └───Util

            AudioFileUtils.cs

            BufferBase.cs

            CaptureEvents.cs

            ChSTT.cs

            EventGridPublisher.cs

            JaSTT.cs

            JoinInfo.cs

            MyGraphLogger.cs

            MySTT.cs

            NewSTT.cs

            SwSTT.cs

            ThSTT.cs

            TranscriptionEntity.cs

            ZipUtils.cs  

I have all dependent DLL in one folder

AppDomainResolver.dll

AWSSDK.Core.dll

AWSSDK.SecurityToken.dll

DnsClient.dll

DotNetEnv.dll

ICSharpCode.SharpZipLib.dll

MediaPerf.dll

Microsoft.AI.Agent.Intercept.dll

Microsoft.AI.DependencyCollector.dll

Microsoft.AI.EventCounterCollector.dll

Microsoft.AI.PerfCounterCollector.dll

Microsoft.AI.ServerTelemetryChannel.dll

Microsoft.AI.WindowsServer.dll

Microsoft.ApplicationInsights.dll

Microsoft.ApplicationInsights.WorkerService.dll

Microsoft.Applications.Telemetry.dll

Microsoft.Applications.Telemetry.Server.dll

Microsoft.Azure.EventGrid.dll

Microsoft.Bcl.AsyncInterfaces.dll

Microsoft.Bond.dll

Microsoft.Bond.Interfaces.dll

Microsoft.CognitiveServices.Speech.core.dll

Microsoft.CognitiveServices.Speech.csharp.dll

Microsoft.CognitiveServices.Speech.extension.audio.sys.dll

Microsoft.CognitiveServices.Speech.extension.codec.dll

Microsoft.CognitiveServices.Speech.extension.kws.dll

Microsoft.CognitiveServices.Speech.extension.silk_codec.dll

Microsoft.Extensions.Configuration.Abstractions.dll

Microsoft.Extensions.Configuration.Binder.dll

Microsoft.Extensions.Configuration.dll

Microsoft.Extensions.Configuration.EnvironmentVariables.dll

Microsoft.Extensions.Configuration.FileExtensions.dll

Microsoft.Extensions.Configuration.Json.dll

Microsoft.Extensions.DependencyInjection.Abstractions.dll

Microsoft.Extensions.DependencyInjection.dll

Microsoft.Extensions.FileProviders.Abstractions.dll

Microsoft.Extensions.FileProviders.Physical.dll

Microsoft.Extensions.FileSystemGlobbing.dll

Microsoft.Extensions.Logging.Abstractions.dll

Microsoft.Extensions.Logging.ApplicationInsights.dll

Microsoft.Extensions.Logging.dll

Microsoft.Extensions.Options.ConfigurationExtensions.dll

Microsoft.Extensions.Options.dll

Microsoft.Extensions.Primitives.dll

Microsoft.Graph.Communications.Calls.dll

Microsoft.Graph.Communications.Calls.Media.dll

Microsoft.Graph.Communications.Client.dll

Microsoft.Graph.Communications.Common.dll

Microsoft.Graph.Communications.Core.dll

Microsoft.Graph.Core.dll

Microsoft.Graph.dll

Microsoft.IdentityModel.Clients.ActiveDirectory.dll

Microsoft.IdentityModel.JsonWebTokens.dll

Microsoft.IdentityModel.Logging.dll

Microsoft.IdentityModel.Protocols.dll

Microsoft.IdentityModel.Protocols.OpenIdConnect.dll

Microsoft.IdentityModel.Tokens.dll

Microsoft.Owin.dll

Microsoft.Owin.Host.HttpListener.dll

Microsoft.Owin.Hosting.dll

Microsoft.Rest.ClientRuntime.Azure.dll

Microsoft.Rest.ClientRuntime.dll

Microsoft.Rtc.Internal.Media.dll

Microsoft.Rtc.Internal.Media.MediaApi.dll

Microsoft.Skype.Bots.Media.dll

Microsoft.Skype.ECS.Client.dll

Microsoft.Skype.ECS.Core.dll

Microsoft.Skype.Internal.Media.AudioLib.dll

Microsoft.Skype.Internal.Media.H264.dll

Microsoft.Skype.Seatbelt.Core.ClientHelpers.dll

Microsoft.Skype.Seatbelt.Core.Common.dll

Microsoft.Skype.Seatbelt.Core.dll

Microsoft.Win32.Registry.dll

mongocrypt.dll

MongoDB.Bson.dll

MongoDB.Driver.Core.dll

MongoDB.Driver.dll

MongoDB.Libmongocrypt.dll

MP.Contracts.dll

MP.WebAPI.dll

MPAzAppHost.dll

MPServiceHostLib.dll

MPServiceImp.dll

NAudio.dll

Newtonsoft.Json.Bson.dll

Newtonsoft.Json.dll

OpenTelemetry.Api.dll

OpenTelemetry.dll

OpenTelemetry.Exporter.Console.dll

Owin.dll

RecordingBot.Model.dll

RecordingBot.Services.dll

rtmcodecs.dll

RtmMvrCs.dll

rtmpal.dll

SharpCompress.dll

SkypeRT.dll

Snappier.dll

System.Buffers.dll

System.Collections.Immutable.dll

System.ComponentModel.Annotations.dll

System.Diagnostics.DiagnosticSource.dll

System.IdentityModel.Tokens.Jwt.dll

System.Memory.dll

System.Net.Http.Formatting.dll

System.Numerics.Vectors.dll

System.Runtime.CompilerServices.Unsafe.dll

System.Security.AccessControl.dll

System.Security.Principal.Windows.dll

System.Text.Encoding.CodePages.dll

System.Text.Encodings.Web.dll

System.Text.Json.dll

System.Threading.Tasks.Dataflow.dll

System.Threading.Tasks.Extensions.dll

System.ValueTuple.dll

System.Web.Http.dll

System.Web.Http.Owin.dll

System.Web.Http.WebHost.dll

ZstdSharp.dll

Need to come up with .csproj to reference above local DLL and build a
final