feat: Implement postgres vector extension #684

Job	Run time
Compile SQLite (live/sqlite)	3m 26s
Clippy	1m 22s
Compile SQLite (discovery/sqlite)	3m 22s
Compile Postgres (live/postgres)	3m 26s
Compile MySQL (live/mysql)	3m 34s
Compile SQLite (writer/sqlite)	3m 29s
Compile Postgres (discovery/postgres)	3m 29s
Compile MySQL (discovery/mysql)	3m 20s
Compile Postgres (writer/postgres)	3m 12s
Rustfmt	21s
Compile MySQL (writer/mysql)	3m 30s
Unit Test	1m 42s
Postgres (14.4, live/postgres)	1m 37s
Postgres (14.4, discovery/postgres)	1m 37s
Postgres (14.4, writer/postgres)	1m 18s
SQLite (live/sqlite)	54s
SQLite (discovery/sqlite)	25s
SQLite (writer/sqlite)	34s
MariaDB (10.6, live/mysql)	46s
MySQL (8, live/mysql)	1m 26s
MariaDB (10.6, discovery/mysql)	1m 11s
MySQL (8, discovery/mysql)	1m 7s
MariaDB (10.6, writer/mysql)	37s
MySQL (8, writer/mysql)	1m 2s
MySQL (5.7, live/mysql)	1m 18s
MySQL (5.7, discovery/mysql)	1m 20s
MySQL (5.7, writer/mysql)	1m 6s
	50m 31s

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