fix: export permissions API for external use

This will export the ChainGrpcPermissionsApi, which will allow it to be
used in the library

packages/sdk-ts/src/client/chain/grpc/index.ts

@@ -10,6 +10,7 @@ export { ChainGrpcInsuranceFundApi } from './ChainGrpcInsuranceFundApi'
 export { ChainGrpcMintApi } from './ChainGrpcMintApi'
 export { ChainGrpcOracleApi } from './ChainGrpcOracleApi'
 export { ChainGrpcPeggyApi } from './ChainGrpcPeggyApi'
+export { ChainGrpcPermissionsApi } from './ChainGrpcPermissionsApi'
 export { ChainGrpcStakingApi } from './ChainGrpcStakingApi'
 export { ChainGrpcTokenFactoryApi } from './ChainGrpcTokenFactoryApi'
 export { ChainGrpcWasmApi } from './ChainGrpcWasmApi'