[Shim] Add SDK version labels / Environment resource detector

[rajkumar-rangaraj]

• Added disto names to resource. Ref: https://github.com/Azure/azure-sdk-for-net/pull/54011/files#diff-bde453aebcc5c1ba33c4ca69e527c1047b4143eea77ce3297548b4ef4ce3a221R78-R79

                   SdkVersionUtils.VersionType = _aiSdkDistroValue switch
                    {
                        "Azure.Monitor.OpenTelemetry.AspNetCore" => SdkVersionType.Distro,
                        "Microsoft.ApplicationInsights" => SdkVersionType.ShimBase,
                        "Microsoft.ApplicationInsights.AspNetCore" => SdkVersionType.ShimAspNetCore,
                        "Microsoft.ApplicationInsights.WorkerService" => SdkVersionType.ShimWorkerService,
                        "Microsoft.ApplicationInsights.Web" => SdkVersionType.ShimWeb,
                        _ => SdkVersionUtils.VersionType
                    };

• Added AspNetCoreEnvironmentResourceDetector in place of telemetry initializer in AspNetCore
• Removed unused code.