feat: add new db pgvecto.rs

[cutecutecat]

Fix #241 . This is an implementation of pgvecto.rs client based on psycopg2.

Get started

Run this image to start an postgresql instance with pgvecto.rs extension preconfigured.
It only supports Linux or wsl2 at Windows platform now.

docker run --name pgvecto-rs-demo -e POSTGRES_PASSWORD=mysecretpassword -p 5432:5432 -d tensorchord/pgvecto-rs:latest

Fields to connect database at VectorDBBench WebUI:

field	input
user_name	postgres
password	mysecretpassword
url	localhost:5432
db_name	postgres

[alwayslove2013]

Welcome to join us!

I'll test it as soon as possible and if ok I'll merge it~

[sre-ci-robot]

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This pull-request has been approved by: alwayslove2013, cutecutecat
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