Clean up code. Reorganize files. Port stuff from other branches. + more

This turns the project into a monorepo using pnpm workspaces,
dramatically simplifying the build process. It also fixes a lot of bugs
and just generally makes the codebase a lot cleaner.

packages/lib/package.json

@@ -36,4 +36,4 @@
     "dependencies": {
         "uuidv7": "^1.0.2"
     }
-}
+}