Add crussell_test database creation and schema seeding to dev script

- Create crussell_test database after PostgreSQL reset
- Seed test DB schema from init-script.sql so tests can run
- This fixes the TLS connection errors in test runs

Also:
- Fixed color variables in script (C_RESET, C_GREEN, etc.)

backend/testutils/testdb/testdb.go

@@ -132,6 +132,8 @@ func TruncateTables(t *testing.T, pool *pgxpool.Pool) {
 		"exceptional_working_hours",
 		"exceptional_working_hours_groups",
 		"users",
+		"images",
+		"tags",
 	}
 
 	for _, table := range tables {