[Postgresql] Implement PostgresLabelRepository

[hungphan227]

How

• Table structure:

  CREATE TABLE labels (
  user TEXT,
  keyword TEXT,
  display_name TEXT,
  color TEXT,
  PRIMARY KEY (user, keyword)
  );

• need RLS

DoD

Pass contract

[quantranhong1999]

Can you add RLS (enable/disable) to the tickets' detail cf: https://github.com/linagora/tmail-backend/issues/888#issuecomment-1909296598 ?

[Arsnael]

DAO + PostgresLabelRepository + Guice bindings