docs: add caveat description

proto/macaroon/v1/genesis.proto

@@ -54,6 +54,7 @@ message Caveats {
   repeated Caveat supported_third_party = 2;
 }
 
+// Caveat defines the caveat
 message Caveat {
   repeated string scopes = 1;
   string caveat = 2;

proto/macaroon/v1/state.proto

@@ -7,6 +7,7 @@ option go_package = "github.com/onsonr/sonr/x/macaroon/types";
 
 // https://github.com/cosmos/cosmos-sdk/blob/main/orm/README.md
 
+// Grant is a Grant message type.
 message Grant {
   option (cosmos.orm.v1.table) = {
     id : 1
@@ -21,6 +22,7 @@ message Grant {
   int64 expiry_height = 5;
 }
 
+// Macaroon is a Macaroon message type.
 message Macaroon {
   option (cosmos.orm.v1.table) = {
     id : 2

proto/macaroon/v1/tx.proto

@@ -13,8 +13,6 @@ service Msg {
   option (cosmos.msg.v1.service) = true;
 
   // UpdateParams defines a governance operation for updating the parameters.
-  //
-  // Since: cosmos-sdk 0.47
   rpc UpdateParams(MsgUpdateParams) returns (MsgUpdateParamsResponse);
 
   // IssueMacaroon asserts the given controller is the owner of the given