test: Reorganize test/ folder into one subdirectory for each test type

test/spec/fixtures/database.sql

@@ -0,0 +1,6 @@
+CREATE EXTENSION IF NOT EXISTS pgcrypto;
+ALTER DATABASE :DBNAME SET request.jwt.claim.id = '-1';
+
+set client_min_messages to warning;
+DROP SCHEMA IF EXISTS test, private, postgrest, jwt, public, تست, extensions, v1, v2 CASCADE;
+DROP TYPE IF EXISTS jwt_token CASCADE;