Add repository topics and tags for open-source discoverability #14

Description

The repository currently has no topics set on GitHub. Adding relevant topics significantly improves search discoverability for users looking for T-SQL parsers, AST tools, and SonarQube analyzers.

Proposed Changes

Add topics to the repository settings:

• tsql
• sql-server
• scriptdom
• ast
• parser
• java
• sonarqube
• linter
• static-analysis
• antlr