deprecate BalanceResponse.revocable in favor of authorizedToMaintainLiabilities

Author: Ryang-21

src/rpc/api.ts

@@ -572,7 +572,8 @@ export namespace Api {
       authorized: boolean;
       clawback: boolean;
       authorizedToMaintainLiabilities?: boolean; // only present for trustlines
-
+      /** @deprecated Please use `authorizedToMaintainLiabilities` instead */
+      revocable?: boolean;
       lastModifiedLedgerSeq?: number;
       liveUntilLedgerSeq?: number;
     };

src/rpc/server.ts

@@ -421,6 +421,7 @@ export class RpcServer {
           authorized: Boolean(tl.flags() & 0x1), // AUTHORIZED_FLAG
           clawback: Boolean(tl.flags() & 0x4), // TRUSTLINE_CLAWBACK_ENABLED_FLAG
           authorizedToMaintainLiabilities: Boolean(tl.flags() & 0x2), // AUTHORIZED_TO_MAINTAIN_LIABILITIES_FLAG
+          revocable: Boolean(tl.flags() & 0x2), // AUTHORIZED_TO_MAINTAIN_LIABILITIES_FLAG (deprecated, will be removed in a future major release)
         },
       };
     } else if (StrKey.isValidContract(addr)) {