Use Semantic model for generating sources

[clairernovotny]

What kind of change does this PR introduce?

What is the current behavior?
Syntax parsing

What is the new behavior?
Semantic parsing

What might this PR break?

Please check if the PR fulfills these requirements

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Other information:

[todo]

we should allow source generators to provide source during initialize, so that this step isn't required.

refit/InterfaceStubGenerator.Core/InterfaceStubGenerator.cs

Lines 69 to 74 in 7d08d89

	// TODO: we should allow source generators to provide source during initialize, so that this step isn't required.
	var options = (context.Compilation as CSharpCompilation).SyntaxTrees[0].Options as CSharpParseOptions;
	var compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(attributeText, Encoding.UTF8), options));
	// get the newly bound attribute
	var preserveAttributeSymbol = compilation.GetTypeByMetadataName($"{refitInternalNamespace}.PreserveAttribute");

---

This comment was generated by todo based on a TODO comment in 7d08d89 in #1029. cc @reactiveui.

[bennor]

Great to see this. It'll make a lot of people happy.

[todo]

we should allow source generators to provide source during initialize, so that this step isn't required.

refit/InterfaceStubGenerator.Core/InterfaceStubGenerator.cs

Lines 77 to 82 in 88a8573

	// TODO: we should allow source generators to provide source during initialize, so that this step isn't required.
	var options = (context.Compilation as CSharpCompilation)!.SyntaxTrees[0].Options as CSharpParseOptions;
	var compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(attributeText, Encoding.UTF8), options));
	// get the newly bound attribute
	var preserveAttributeSymbol = compilation.GetTypeByMetadataName($"{refitInternalNamespace}.PreserveAttribute")!;

---

This comment was generated by todo based on a TODO comment in 88a8573 in #1029. cc @reactiveui.

[todo]

we should allow source generators to provide source during initialize, so that this step isn't required.

refit/InterfaceStubGenerator.Core/InterfaceStubGenerator.cs

Lines 77 to 82 in b3c3e70

	// TODO: we should allow source generators to provide source during initialize, so that this step isn't required.
	var options = (context.Compilation as CSharpCompilation)!.SyntaxTrees[0].Options as CSharpParseOptions;
	var compilation = context.Compilation.AddSyntaxTrees(CSharpSyntaxTree.ParseText(SourceText.From(attributeText, Encoding.UTF8), options));
	// get the newly bound attribute
	var preserveAttributeSymbol = compilation.GetTypeByMetadataName($"{refitInternalNamespace}.PreserveAttribute")!;

---

This comment was generated by todo based on a TODO comment in b3c3e70 in #1029. cc @reactiveui.

[github-actions]

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