fix: Migrate from better-sqlite3 to node-sqlite3-wasm

[dividedmind]

This pull request replaces the better-sqlite3 library with node-sqlite3-wasm.

Benefits:

• no need to recompile across Node versions and platforms,
• allows creating a single js bundle distribution in the future,
• avoids dynamic linking of the unsigned sqlite DLL which might trip up antivirus software.

Dependency updates:

• packages/cli/package.json: Removed better-sqlite3 and added node-sqlite3-wasm as a dependency. [1] [2]
• packages/search/package.json: Removed better-sqlite3 and added node-sqlite3-wasm as a dependency.

Code modifications:

• Updated import statements to use node-sqlite3-wasm instead of better-sqlite3 in multiple files. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
• Changed the instantiation of the SQLite database from new sqlite3(indexFile) to new sqlite3.Database(indexFile) in several functions. [1] [2] [3] [4] [5] [6]
• Adjusted method calls and parameters to match the new library's API, including changes to prepare and run methods in FileIndex and SnippetIndex classes. [1] [2] [3] [4] [5] [6]

These changes ensure compatibility with the new SQLite library and maintain the functionality of the existing codebase.