Build pg_jsonschema and pg_graphql extensions (#3535)

## Describe your changes
Layer for building pg extensions written on Rust

It required forking:
* `cargo-pgx` (in order not to catch an ABI mismatch error (`cargo-pgx`
hardcoded ABI tcdi/pgx#1032)
* `pg_jsonschema` (to use forked `cargo-pgx` version)
* `pgx-contrib-spiext` (to use forked `cargo-pgx`)
* `pg_graphql` (to use forked `cargo-pgx` and `pgx-contrib-spiext`
version)

Before the patch:

```
postgres=# create extension pg_jsonschema;
2023-02-02 17:45:23.120 UTC [35] ERROR:  incompatible library "/usr/local/lib/pg_jsonschema.so": ABI mismatch
2023-02-02 17:45:23.120 UTC [35] DETAIL:  Server has ABI "Neon Postgres", library has "PostgreSQL".
2023-02-02 17:45:23.120 UTC [35] STATEMENT:  create extension pg_jsonschema;
ERROR:  incompatible library "/usr/local/lib/pg_jsonschema.so": ABI mismatch
DETAIL:  Server has ABI "Neon Postgres", library has "PostgreSQL".
```

After 

```
postgres=# create extension pg_jsonschema;
CREATE EXTENSION
postgres=# select json_matches_schema('{"type": "object"}', '{}');
 json_matches_schema
---------------------
 t
postgres=# create extension pg_graphql;
CREATE EXTENSION
postgres=# create table book(id int primary key, title text);
CREATE TABLE
postgres=# insert into book(id, title) values (1, 'book 1');
INSERT 0 1
postgres=# select graphql.resolve($$
query {
  bookCollection {
    edges {
      node {
        id
      }
    }
  }
}
$$);
                            resolve
----------------------------------------------------------------
 {"data": {"bookCollection": {"edges": [{"node": {"id": 1}}]}}}
(1 row)
```

## Issue ticket number and link
Closes #3429, #3096

## Checklist before requesting a review
- [x] I have performed a self-review of my code.
- [x] If it is a core feature, I have added thorough tests.
- [x] Do we need to implement analytics? if so did you add the relevant
metrics to the dashboard?
- [x] If this PR requires public announcement, mark it with
/release-notes label and add several sentences in this section.

`pg_jsonschema` extension will be available for our customers

Dockerfile.compute-node

@@ -1,3 +1,4 @@
+ARG PG_VERSION
 ARG REPOSITORY=369495373322.dkr.ecr.eu-central-1.amazonaws.com
 ARG IMAGE=rust
 ARG TAG=pinned
@@ -180,6 +181,62 @@ RUN wget https://github.com/michelp/pgjwt/archive/9742dab1b2f297ad3811120db7b214
     make -j $(getconf _NPROCESSORS_ONLN) install PG_CONFIG=/usr/local/pgsql/bin/pg_config && \
     echo 'trusted = true' >> /usr/local/pgsql/share/extension/pgjwt.control
 
+#########################################################################################
+# 
+# Layer "rust extensions"
+# This layer is used to build `pgx` deps
+#
+#########################################################################################
+FROM build-deps AS rust-extensions-build
+COPY --from=pg-build /usr/local/pgsql/ /usr/local/pgsql/
+
+RUN apt-get update && \
+    apt-get install -y curl libclang-dev cmake && \
+    useradd -ms /bin/bash nonroot -b /home
+
+ENV HOME=/home/nonroot
+ENV PATH="/home/nonroot/.cargo/bin:/usr/local/pgsql/bin/:$PATH"
+USER nonroot
+WORKDIR /home/nonroot
+ARG PG_VERSION
+
+RUN curl -sSO https://static.rust-lang.org/rustup/dist/$(uname -m)-unknown-linux-gnu/rustup-init && \
+    chmod +x rustup-init && \
+    ./rustup-init -y --no-modify-path --profile minimal --default-toolchain stable && \
+    rm rustup-init && \
+    cargo install --git https://github.com/vadim2404/pgx --branch neon_abi_v0.6.1 --locked cargo-pgx && \
+    /bin/bash -c 'cargo pgx init --pg${PG_VERSION:1}=/usr/local/pgsql/bin/pg_config'
+
+USER root
+
+#########################################################################################
+# 
+# Layer "pg-jsonschema-pg-build"
+# Compile "pg_jsonschema" extension
+#
+#########################################################################################
+
+FROM rust-extensions-build AS pg-jsonschema-pg-build
+
+RUN git clone --depth=1 --single-branch --branch neon_abi_v0.1.4 https://github.com/vadim2404/pg_jsonschema/ && \
+    cd pg_jsonschema && \
+    cargo pgx install --release && \
+    echo "trusted = true" >> /usr/local/pgsql/share/extension/pg_jsonschema.control
+
+#########################################################################################
+# 
+# Layer "pg-graphql-pg-build"
+# Compile "pg_graphql" extension
+#
+#########################################################################################
+
+FROM rust-extensions-build AS pg-graphql-pg-build
+
+RUN git clone --depth=1 --single-branch --branch neon_abi_v1.1.0 https://github.com/vadim2404/pg_graphql && \
+    cd pg_graphql && \  
+    cargo pgx install --release && \
+    echo "trusted = true" >> /usr/local/pgsql/share/extension/pg_graphql.control
+
 #########################################################################################
 #
 # Layer "neon-pg-ext-build"
@@ -195,6 +252,8 @@ COPY --from=h3-pg-build /h3/usr /
 COPY --from=unit-pg-build /usr/local/pgsql/ /usr/local/pgsql/
 COPY --from=vector-pg-build /usr/local/pgsql/ /usr/local/pgsql/
 COPY --from=pgjwt-pg-build /usr/local/pgsql/ /usr/local/pgsql/
+COPY --from=pg-jsonschema-pg-build /usr/local/pgsql/ /usr/local/pgsql/
+COPY --from=pg-graphql-pg-build /usr/local/pgsql/ /usr/local/pgsql/
 COPY pgxn/ pgxn/
 
 RUN make -j $(getconf _NPROCESSORS_ONLN) \