Feature: run Neo analyzers during nccs compilation

[Jim8y]

Summary

• add a complete, deterministic Neo analyzer suite
• run the suite before contract lowering when enabled
• enable analyzer execution by default for the nccs CLI
• keep library usage opt-in through CompilationOptions.RunAnalyzers
• package the analyzer runtime with the compiler tool
• preserve the existing Template test coverage boundary for the new transitive analyzer dependency

Why

A contract could pass through nccs without the diagnostics users see in an analyzer-enabled IDE. This allowed unsupported APIs and contract-specific restrictions to reach the lowering stage and produce less useful compiler errors.

Validation

• compiler unit tests: 1496 passed
• analyzer unit tests: 284 passed
• analyzer execution tests: 5 passed
• Template tests with coverage: 46 passed
• generated lcov contains no analyzer source files from the Template test project
• targeted dotnet format --verify-no-changes
• compiler tool package boundary test

Part of #1841.

[codecov]

Codecov Report

❌ Patch coverage is 92.30769% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.30%. Comparing base (1fa8625) to head (cd13221).

Files with missing lines	Patch %	Lines
...iler.CSharp/CompilationEngine/CompilationEngine.cs	90.90%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##           master-n3    #1905      +/-   ##
=============================================
+ Coverage      84.26%   84.30%   +0.03%     
=============================================
  Files            308      308              
  Lines          28342    28367      +25     
  Branches        4002     4005       +3     
=============================================
+ Hits           23882    23914      +32     
+ Misses          3464     3457       -7     
  Partials         996      996              

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