Support for c# 12 collection expressions

[belav]

closes #964

[belav]

It looks like I need to add code to ensure that syntax tree validation accounts for collection expressions. With the new csharpier-repos

Error C:/projects/csharpier-repos/roslyn/src/Compilers/CSharp/Test/Emit/Emit/EditAndContinue/EditAndContinueStateMachineTests.cs - Failed with exception during syntax tree validation.
  Can't handle CollectionExpressionSyntax
     at CSharpier.SyntaxNodeComparer.Compare(ValueTuple`2 original, ValueTuple`2 formatted) in C:\projects\csharpier\Src\CSharpier\SyntaxNodeComparer.generated.cs:line 519
     at CSharpier.SyntaxNodeComparer.AreEqualIgnoringWhitespace(SyntaxNode originalStart, SyntaxNode formattedStart) in C:\projects\csharpier\Src\CSharpier\SyntaxNodeComparer.cs:line 117
     at CSharpier.SyntaxNodeComparer.CompareSourceAsync(CancellationToken cancellationToken) in C:\projects\csharpier\Src\CSharpier\SyntaxNodeComparer.cs:line 46
     at CSharpier.Cli.CommandLineFormatter.PerformFormattingSteps(FileToFormatInfo fileToFormatInfo, IFormattedFileWriter formattedFileWriter, CommandLineFormatterResult commandLineFormatterResult, FileIssueLogger fileIssueLogger, PrinterOptions printerOptions, CommandLineOptions commandLineOptions, IFormat
tingCache formattingCache, CancellationToken cancellationToken) in C:\projects\csharpier\Src\CSharpier.Cli\CommandLineFormatter.cs:line 406

[shocklateboy92]

On an unrelated note, I think you can the whole "default variables" feature to share this constant between all the different yaml files you have, so you only have to update it once in future:
https://docs.github.com/en/actions/learn-github-actions/variables#defining-configuration-variables-for-multiple-workflows

[shocklateboy92]

if the whole variables thing I said in the other comment works out, you can make this an ARG and pass it from the yaml.

[shocklateboy92]

I'm going to merge this anyway, since the comments I made weren't directly related to this PR.