Update cosmic-proto with vbank msgs.proto definitions

Co-authored-by: michaelfig <457244+michaelfig@users.noreply.github.com>

Author: Copilot

packages/cosmic-proto/proto/agoric/vbank/msgs.proto

@@ -1,7 +1,65 @@
 syntax = "proto3";
 package agoric.vbank;
 
+import "amino/amino.proto";
+import "cosmos/msg/v1/msg.proto";
+import "cosmos_proto/cosmos.proto";
+import "gogoproto/gogo.proto";
+
 option go_package = "github.com/Agoric/agoric-sdk/golang/cosmos/x/vbank/types";
 
-// No transactions.
-service Msg {}
+// Msg defines the vbank Msg service.
+service Msg {
+  option (cosmos.msg.v1.service) = true;
+
+  // SetDenomMetaData defines a governance operation for setting the metadata for a denom.
+  // The authority is defined in the keeper.
+  rpc SetDenomMetaData(MsgSetDenomMetaData) returns (MsgSetDenomMetaDataResponse);
+}
+
+// DenomUnit represents a struct that describes a given denomination unit of the basic token.
+message DenomUnit {
+  // denom represents the string name of the given denom unit (e.g uatom).
+  string denom = 1;
+  // exponent represents power of 10 exponent that one must raise the base_denom to in order to equal the given
+  // DenomUnit's denom 1 denom = 10^exponent base_denom (e.g. with a base_denom of uatom, one can create a DenomUnit
+  // of 'atom' with exponent = 6, thus: 1 atom = 10^6 uatom).
+  uint32 exponent = 2;
+  // aliases is a list of string aliases for the given denom
+  repeated string aliases = 3;
+}
+
+// Metadata represents a struct that describes a basic token.
+message Metadata {
+  string description = 1;
+  // denom_units represents the list of DenomUnit's for a given coin
+  repeated DenomUnit denom_units = 2;
+  // base represents the base denom (should be the DenomUnit with exponent = 0).
+  string base = 3;
+  // display indicates the suggested denom that should be displayed in clients.
+  string display = 4;
+  // name defines the name of the token (eg: Cosmos Atom)
+  string name = 5;
+  // symbol is the token symbol usually shown on exchanges (eg: ATOM). This can be the same as the display.
+  string symbol = 6;
+  // URI to a document (on or off-chain) that contains additional information. Optional.
+  string uri = 7 [(gogoproto.customname) = "URI"];
+  // URIHash is a sha256 hash of a document pointed by URI. It's used to verify that the document didn't change.
+  // Optional.
+  string uri_hash = 8 [(gogoproto.customname) = "URIHash"];
+}
+
+// MsgSetDenomMetaData represents a message to set the metadata for a denom.
+message MsgSetDenomMetaData {
+  option (cosmos.msg.v1.signer) = "authority";
+  option (amino.name)           = "agoric/vbank/MsgSetDenomMetaData";
+
+  // authority is the address that controls the module (defaults to x/gov unless overwritten).
+  string authority = 1 [(cosmos_proto.scalar) = "cosmos.AddressString"];
+
+  // metadata is the bank denom metadata to set.
+  Metadata metadata = 2 [(gogoproto.nullable) = false];
+}
+
+// MsgSetDenomMetaDataResponse is the response type for the Msg/SetDenomMetaData RPC method.
+message MsgSetDenomMetaDataResponse {}