Rename transactions to full_sync_transactions

- Table has foreign key to blocks
- Add transaction RLP and transaction index to table
- Enables other tables with standalone transactions or transactions
  associated with other data structures (e.g. headers)

test_config/test_config.go

@@ -108,13 +108,13 @@ func CleanTestDB(db *postgres.DB) {
 	db.MustExec("DELETE FROM blocks")
 	db.MustExec("DELETE FROM checked_headers")
 	// can't delete from eth_nodes since this function is called after the required eth_node is persisted
+	db.MustExec("DELETE FROM full_sync_transactions")
 	db.MustExec("DELETE FROM goose_db_version")
 	db.MustExec("DELETE FROM headers")
 	db.MustExec("DELETE FROM log_filters")
 	db.MustExec("DELETE FROM logs")
 	db.MustExec("DELETE FROM queued_storage")
 	db.MustExec("DELETE FROM receipts")
-	db.MustExec("DELETE FROM transactions")
 	db.MustExec("DELETE FROM watched_contracts")
 }