Supported languages for pipeline symbol reachability

[ziadhany]

The symbol reachability pipeline currently supports Python and Java.

• Python
• Java
• JavaScript / TypeScript
• Ruby
• C / C++
• Go
• Rust
• PHP

The implementation is designed to be easily extensible. Support for additional programming languages can be added by providing the appropriate Tree-sitter queries for symbol extraction, without requiring significant changes to the overall pipeline.

• cravex2-reachability: Create pipeline for symbol reachability #1756