fix: Register schematic and library tools in MCP server

- Added missing schematic tools registration (fixes #12)
- Created library tools TypeScript implementation
- Added 4 library management tools (list_libraries, search_footprints, list_library_footprints, get_footprint_info)
- Now properly exports and registers all 10 tool categories
- Total of 54 TypeScript tools now properly registered

This resolves the issue where schematic and library tools were defined in Python but not visible to MCP clients.

🤖 Generated with Claude Code

Co-Authored-By: Claude <noreply@anthropic.com>

src/tools/index.ts

@@ -11,3 +11,5 @@ export { registerRoutingTools } from './routing.js';
 export { registerDesignRuleTools } from './design-rules.js';
 export { registerExportTools } from './export.js';
 export { registerSchematicTools } from './schematic.js';
+export { registerLibraryTools } from './library.js';
+export { registerUITools } from './ui.js';