What does this PR do?

This pull request introduces a new unified SearchTool to enhance text and file search capabilities in the GrokAgent. It also updates dependencies and improves the ChatHistory UI to display search queries. Below is a summary of the most important changes:

New SearchTool Integration:

• Added SearchTool to GrokAgent: Integrated the new SearchTool into the GrokAgent class, including initialization and usage for handling search-related tasks. (src/agent/grok-agent.ts: [1] [2] [3] [4]
• Updated tool usage instructions: Replaced the previous reliance on bash for searches with the new search tool, updating documentation and examples for clarity. (src/agent/grok-agent.ts: [1] [2]
• Defined SearchTool in GROK_TOOLS: Added the SearchTool with detailed parameters and descriptions for its functionality, including options for text, file, and combined searches. (src/grok/tools.ts: src/grok/tools.tsR99-R158)

Dependency Updates:

• Added ripgrep-node dependency: Introduced ripgrep-node to support the implementation of the SearchTool. (package.json: package.jsonR37)

UI Enhancements for Search:

• Updated ChatHistory UI: Modified the ChatHistory component to display search queries when the search tool is used, improving user feedback. (src/ui/components/chat-history.tsx: [1] [2]

Code Organization:

• Exported SearchTool: Added SearchTool to the exports in src/tools/index.ts for proper module integration. (src/tools/index.ts: src/tools/index.tsL1-R5)

Fixes #22

Checklist

• I tested my changes
• I reviewed my own code