Also fix the IDE helper to get value usage info, which fixes the MakeFieldReadOnlyAnalyzer

Fixes #29373
Fixes #30175

Microsoft.CodeAnalysis.Semantics renamed to Microsoft.CodeAnalysis.Operations

Refactored IVariableDeclaration to IVariableDeclarationGroup, which allows for multiple declared symbols as part of a single declaration.

this doesn't replace or change anything yet, just bunch of Operation types for next step.

next step is creating CSharp/VBFactory which return these Operation type and replace callsite that return bound node with this.

after that, I will create xml/generator from Operation.xml.Generated.cs which can produce Operation.xml.Generated.cs

Fixes #17802

Replaced all references of `IReferenceExpression` with `IOperation`.

Which is caused by invalid code.

This time it is caused by BontrolVariable bounf to BoundBadExpression.
Also improved the robustness in the Condition property.

Renamed private members that implement interface members using the convention of InterfaceName_MemberName.

In cases where it is sopposed to represent error state.