[web-db] copy sql-wasm.wasm from node modules to dist

Summary:
In Addition to sql.js library we need to load .wasm file.

Should be accessible via:

• http://localhost:3000/comm/compiled/sql-wasm.wasm in dev
• https://web.comm.app/compiled in prod]

Depends on D6981

Test Plan: Check if file can be accessed

Reviewers: michal, tomek, atul, ashoat

Reviewed By: ashoat

Subscribers: ashoat, atul

Differential Revision: https://phab.comm.dev/D6989