Add OrcaQ to tools list

[cin12211]

I would like to propose adding **OrcaQ** to the awesome-sql list. 

It is an open-source, modern database editor with features designed
to simplify database management:

• Multi-database support (PostgreSQL, MySQL, Redis, etc.)
• Built-in AI assistant
• ERD visualizer
• Schema diff & visual role management
  Repo link: https://github.com/cin12211/orca-q
  Let me know if there's anything else needed for this PR. Thanks!

[gemini-code-assist]

Code Review

This pull request adds OrcaQ, an open-source database editor, to the list of tools in the README. Feedback was provided to improve the consistency of the entry's description by adjusting the tone, capitalization, and sentence structure to match existing items in the list.