Syntax interception for ref struct handling + formatting of (ReadOnly)Span<T>/(ReadOnly)Memory<T>

[kindermannhubert]

Resolves #317.
Resolves #318.

[codecov]

Codecov Report

Attention: Patch coverage is 66.51786% with 75 lines in your changes are missing coverage. Please review.

Project coverage is 77.4%. Comparing base (09748ae) to head (4d80331).
Report is 21 commits behind head on main.

Files	Patch %	Lines
...ing/CustomObjectFormatters/IEnumerableFormatter.cs	43.0%	47 Missing and 6 partials ⚠️
CSharpRepl.Services/RuntimeHelper.cs	57.8%	15 Missing and 1 partial ⚠️
CSharpRepl.Services/Roslyn/RoslynServices.cs	94.7%	4 Missing ⚠️
...harpRepl.Services/Roslyn/Scripting/ScriptRunner.cs	80.0%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #353     +/-   ##
=======================================
+ Coverage   77.3%   77.4%   +0.1%     
=======================================
  Files         83      84      +1     
  Lines       5607    5748    +141     
  Branches     736     749     +13     
=======================================
+ Hits        4335    4450    +115     
- Misses       998    1020     +22     
- Partials     274     278      +4     

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