feat(sdk-coin-trx): add stake support (freeze and vote)

Ticket: SC-1632

Author: abhijit0943

modules/sdk-coin-trx/resources/protobuf/Contract.proto

@@ -155,6 +155,22 @@ message UnfreezeBalanceContract {
   bytes receiver_address = 15;
 }
 
+message FreezeBalanceV2Contract {
+  bytes owner_address = 1;
+  int64 frozen_balance = 2;
+  ResourceCode resource = 3;
+}
+
+message UnfreezeBalanceV2Contract {
+  bytes owner_address = 1;
+  int64 unfreeze_balance = 2;
+  ResourceCode resource = 3;
+}
+
+message WithdrawExpireUnfreezeContract {
+  bytes owner_address = 1;
+}
+
 message UnfreezeAssetContract {
   bytes owner_address = 1;
 }