Create SQL schema/function/role test environment

[halsk]

Is your feature request related to a problem? Please describe.

While the supabase is rely on the PostgreSQL functions and roles, it's good to prepare a test environment for checking those schema, functions, and roles.

Describe the solution you'd like

• Run supabase reset
• Run test script. Maybe we can use Jest and pg.
  • https://www.atdatabases.org/docs/pg-test
  • https://stackoverflow.com/questions/61720872/how-do-you-test-postgres-with-node-js-jest-without-mocking-the-pg-import

[halsk]

I thought it is OK to run tests with the supabase client.