New Extension: `pg_graphql`

[Vonng]

The extension pg_graphql introduce GraphQL capability to PostgreSQL, which is also required by supabase.

We can compile it and add it to Pigsty's RPM to allow installing it via yum

This extension is written in rust, which cloud be a little bit tricy, but we can manage that:

https://supabase.github.io/pg_graphql/installation/

curl --proto '=https' --tlsv1.2 -sf https://sh.rustup.rs | sh
cargo install --locked cargo-pgrx@0.9.8
cargo pgrx init

#....

cd pg_graphql-1.3.0/
cargo pgrx install --release

cargo pgrx package

[Vonng]

Resolved by https://github.com/Vonng/pigsty/commit/a032b4a10f537c7900d0b1362a848bbb5efefe5b