fix: Add back RPC endpoints

Add back DenomTrace/DenomTraces as dependency for 08-wasm e2e's depends on them. Mark as deprecated and implement them
to return nothing (to be replaced with sensible error).

Remove repeated cast from proto definition to reduce required boilerplate to get it compiling.

Remove hack in scripts/go-test-all.go to have e2e tests executing.

modules/apps/transfer/keeper/grpc_query.go

@@ -159,3 +159,18 @@ func (k Keeper) TotalEscrowForDenom(c context.Context, req *types.QueryTotalEscr
 		Amount: amount,
 	}, nil
 }
+
+
+// DenomTrace implements the Query/DenomTrace gRPC method
+// Deprecated: Please use Denom instead.
+func (k Keeper) DenomTrace(c context.Context, req *types.QueryDenomTraceRequest) (*types.QueryDenomTraceResponse, error) {
+    // TODO: Return sensible error.
+    return nil, nil
+}
+
+// DenomTraces implements the Query/DenomTraces gRPC method
+// Deprecated: Please use Denoms instead.
+func (k Keeper) DenomTraces(c context.Context, req *types.QueryDenomTracesRequest) (*types.QueryDenomTracesResponse, error) {
+    // TODO: Return sensible error. 
+    return nil, nil
+}