Postgres-pglite as submodule

[copiltembel]

This PR moves the postgres-pglite dependency out of this repo and adds it as a submodule. The postgres-pglite repo contains Postgres with pglite changes needed for this to work.

Tested with:

$ git clone --single-branch --branch=tudor/move-postgres-pglite-to-ext-repo --recurse-submodules https://github.com/electric-sql/pglite.git
$ cd pglite
$ pnpm install
$ pnpm build:all
$ cd packages/pglite/
& pnpm test

[copiltembel]

Need to update the github actions.

[github-actions]

Built bundles:

• Postgres WASM: https://github.com/electric-sql/pglite/actions/runs/12791816101/artifacts/2435468433
• Interim build files: https://github.com/electric-sql/pglite/actions/runs/12791816101/artifacts/2435468630
• PGlite: https://github.com/electric-sql/pglite/actions/runs/12791816101/artifacts/2435510365
• Demos: https://github.com/electric-sql/pglite/actions/runs/12791816101/artifacts/2435536653

[github-actions]

🚀 Deployed on https://6787dc1b2f6fc22a67eda700--pglite.netlify.app

[samwillis]

This is great.

We still have the ./extra and ./patches dirs, should we move them too? Or we do that in another step.

[samwillis]

This is good for now, but in a future tidy up we need to make this work cross platform (i.e. windows).

[copiltembel]

Yes, this is very ugly but gets the job done!

[copiltembel]

We still have the ./extra and ./patches dirs, should we move them too? Or we do that in another step.

Done, thanks!