Fixes for duplicate key and stack overflow errors, and updates in call site model and symbol table construction

[sinha108]

Motivation and Context

This PR contains the following updates:

• It fixes the illegal state exception (duplicate key) failure that can occur with generic method declarations (Illegal state exception (duplicate key) while analyzing redis lettuce project #136). The fix creates method signatures after performing type erasure, which results in unique method signatures.
• It addresses failures during type resolution by widening the exception handlers at various failure points; this fixes StackOverflow Error during Symbol resolution in JavaParser #137 and other instance of such failures.
• It adds a new argument expression field to CallSite, which is a list of strings that stores the expression for each argument at a call site.
• It updates symbol table construction to exclude some patterns of source roots (e.g., src/test/resources, src/it/resources) that can contain Java code as test inputs.

How Has This Been Tested?

• Added symbol table test case and test data to validate the fix for duplicate key error
• Tested the fixes on the reported failures: redis lettuce for Illegal state exception (duplicate key) while analyzing redis lettuce project #136, fastjson2 for StackOverflow Error during Symbol resolution in JavaParser #137

Breaking Changes

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the Codellm-Devkit Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context