feat: add support for create publication

[cvng]

What kind of change does this PR introduce?

Bug fix, feature, docs update, ...

What is the current behavior?

Please link any relevant issues here.

What is the new behavior?

panics

View log

```rust Parsing node CreatePublicationStmt( CreatePublicationStmt { pubname: "mypublication", options: [], pubobjects: [ Node { node: Some( PublicationObjSpec( PublicationObjSpec { pubobjtype: PublicationobjTable, name: "", pubtable: Some( PublicationTable { relation: Some( RangeVar { catalogname: "", schemaname: "", relname: "users", inh: true, relpersistence: "p", alias: None, location: 43, }, ), where_clause: None, columns: [], }, ), location: 0, }, ), ), }, Node { node: Some( PublicationObjSpec( PublicationObjSpec { pubobjtype: PublicationobjTable, name: "", pubtable: Some( PublicationTable { relation: Some( RangeVar { catalogname: "", schemaname: "", relname: "departments", inh: true, relpersistence: "p", alias: None, location: 50, }, ), where_clause: None, columns: [], }, ), location: 50, }, ), ), }, ], for_all_tables: false, }, ) thread 'valid_statements' panicked at crates/parser/src/parse/libpg_query_node.rs:373:13: assertion `left == right` failed: Tried to start node Node { kind: PublicationObjSpec, depth: 2, properties: [], location: Some( 0, ), } with location 0 but current location is 43 left: 0 right: 43 note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace thread 'valid_statements' panicked at crates/parser/tests/statement_parser_test.rs:36:17: Failed to parse statement 0050: CREATE PUBLICATION mypublication FOR TABLE users, departments; ```

Additional context

failing case:

CREATE PUBLICATION mypublication FOR TABLE users, departments;
^                                        ^

NOTE: adding a PublicationObjSpec in get_node_properties did not help but I have to check again

[cvng]

after inspection, it looks like the location (Some(0)) of the first PublicationObjSpec from the AST is wrong

EDIT: it turns out the PublicationObjSpec has an inner RangeVar where the location (Some(43)) is indeed correct

CREATE PUBLICATION mypublication FOR TABLE users, departments;

            Node {
                node: Some(
                    PublicationObjSpec(
                        PublicationObjSpec {
                            pubobjtype: PublicationobjTable,
                            name: "",
                            pubtable: Some(
                                PublicationTable {
                                    relation: Some(
                                        RangeVar {
                                            catalogname: "",
                                            schemaname: "",
                                            relname: "users",
                                            inh: true,
                                            relpersistence: "p",
                                            alias: None,
                                            location: 43, // <-
                                        },
                                    ),
                                    where_clause: None,
                                    columns: [],
                                },
                            ),
                            location: 0, // <-
                        },
                    ),
                ),
            },

thread 'valid_statements' panicked at crates/parser/src/parse/libpg_query_node.rs:373:13:
assertion `left == right` failed: Tried to start node Node {
    kind: PublicationObjSpec,
    depth: 2,
    properties: [],
    location: Some(
        0,
    ),
} with location 0 but current location is 43
  left: 0
 right: 43

cc @psteinroe

[cvng]

Included in #94