[main] Update dependencies from dnceng/internal/dotnet-optimization dotnet/arcade...

[main] Update dependencies from dnceng/internal/dotnet-optimization dotnet/arcade dotnet/runtime-assets dotnet/hotreload-utils (#57627)

* Update dependencies from https://github.com/dotnet/arcade build 20210817.1

Microsoft.DotNet.XUnitExtensions , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.Build.Tasks.TargetFramework.Sdk , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.ApiCompat , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.GenFacades , Microsoft.DotNet.GenAPI , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.SharedFramework.Sdk
 From Version 6.0.0-beta.21413.4 -> To Version 6.0.0-beta.21417.1

* Removed pinned compiler

* Update source-index-stage1.yml

* Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-optimization build 20210817.5

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21416.5 -> To Version 1.0.0-prerelease.21417.5

* Update dependencies from https://github.com/dotnet/arcade build 20210817.1

Microsoft.DotNet.XUnitExtensions , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.Build.Tasks.TargetFramework.Sdk , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.ApiCompat , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.GenFacades , Microsoft.DotNet.GenAPI , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.SharedFramework.Sdk
 From Version 6.0.0-beta.21413.4 -> To Version 6.0.0-beta.21417.1

* Update dependencies from https://github.com/dotnet/runtime-assets build 20210818.1

Microsoft.DotNet.CilStrip.Sources , System.ComponentModel.TypeConverter.TestData , System.Drawing.Common.TestData , System.IO.Compression.TestData , System.IO.Packaging.TestData , System.Net.TestData , System.Private.Runtime.UnicodeData , System.Runtime.Numerics.TestData , System.Runtime.TimeZoneData , System.Security.Cryptography.X509Certificates.TestData , System.Windows.Extensions.TestData
 From Version 6.0.0-beta.21416.1 -> To Version 7.0.0-beta.21418.1

* Update dependencies from https://github.com/dotnet/hotreload-utils build 20210817.1

Microsoft.DotNet.HotReload.Utils.Generator.BuildTool
 From Version 1.0.2-alpha.0.21413.1 -> To Version 1.0.2-alpha.0.21417.1

* Update dependencies from https://github.com/dotnet/arcade build 20210818.12

Microsoft.DotNet.XUnitExtensions , Microsoft.DotNet.VersionTools.Tasks , Microsoft.DotNet.Build.Tasks.Workloads , Microsoft.DotNet.Build.Tasks.TargetFramework.Sdk , Microsoft.DotNet.Build.Tasks.Packaging , Microsoft.DotNet.Build.Tasks.Installers , Microsoft.DotNet.Build.Tasks.Feed , Microsoft.DotNet.Build.Tasks.Archives , Microsoft.DotNet.Arcade.Sdk , Microsoft.DotNet.ApiCompat , Microsoft.DotNet.CodeAnalysis , Microsoft.DotNet.XUnitConsoleRunner , Microsoft.DotNet.GenFacades , Microsoft.DotNet.GenAPI , Microsoft.DotNet.RemoteExecutor , Microsoft.DotNet.PackageTesting , Microsoft.DotNet.Helix.Sdk , Microsoft.DotNet.SharedFramework.Sdk
 From Version 6.0.0-beta.21413.4 -> To Version 6.0.0-beta.21418.12

* Add dotnet7 feeds

* Update NuGet.config

* Delete source-index.yml

* Update source-index template addition

* Fix Cmake warning about mismatching arguments

* Update dependencies from https://dev.azure.com/dnceng/internal/_git/dotnet-optimization build 20210818.4

optimization.linux-x64.MIBC.Runtime , optimization.windows_nt-x64.MIBC.Runtime , optimization.windows_nt-x86.MIBC.Runtime , optimization.PGO.CoreCLR
 From Version 1.0.0-prerelease.21416.5 -> To Version 1.0.0-prerelease.21418.4

* Fix extracting string in IJW.cmake

The InitializeDotNetCli function now prints additional messages which means we need to only extract the string we want from getRefPackFolderFromSdk.ps1

Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Viktor Hofer <viktor.hofer@microsoft.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>