Bugfix invalid inheritdoc

[marc2911]

Resolves codecentric#94

1. fix doc comment rendering inside IDE

to recap that issue: basically, a method:

public List<string> Method((Class1, Class2) param) {}

generated a compiler warning about an incorrect cref attribute syntax and also any existing doc comments on that method were not rendered

• this PR fixes that
• we now use the native Roselyn symbol syntax directly instead of that original hack solution
• left the old path as fallback
• Method comments with tuple parameters are now correctly rendered!

private static string InheritDoc(ISymbol source)
{
    var declarationId = DocumentationCommentId.CreateDeclarationId(source);
    if (!string.IsNullOrWhiteSpace(declarationId))
        return $"/// <inheritdoc cref=\"{declarationId}\" />";

    // old probably hacky fallback ...
    // we use inherit doc because that should be able to fetch documentation from base classes.
    return $"/// <inheritdoc cref=\"{source.ToDisplayString().Replace('<', '{').Replace('>', '}').Replace("params ", "")}\" />";
}

• this also means that all test file snapshots were updated

if you look at for example:

we basically now use the canonical symbol representations the compiler uses. those start with a prefix for example M: (Method) and also write return types differently.

=> ultimately this just means that our doc comments should now correctly reference their member and result in correct rendering in any circumstance

2. also updated Example Project to dotnet 10