lab4 and lab3

fix: sh clickhouse to chmod

fix: lab2 click house

fix md

add: README, greenplum start script and md

fix

fix

add del vectors

fix

fix

fix

fix

add del vectors

fix

fix

add vectorization

fix

add repo_choose rem api and vector_store choose

fix

req update

try to fix...

make req

Merge branch 'Demo-Project' into Demo-Project-2

add divider