added migration function

artifacts/checksums.txt

@@ -1 +1 @@
-abe859d0055a8d3e9698f7a2d9ee61b96ecc50160c0c0c9965f564456ac4641f  msig_launcher.wasm
+f92ac4232b90cc4be0703e8bb7612ddbc41bf7f87cfacdf0dd280f37b1e3d8f5  msig_launcher.wasm

contracts/msig-launcher/src/contract.rs

@@ -3,13 +3,15 @@ use cosmwasm_std::entry_point;
 use cosmwasm_std::{
     to_json_binary, Binary, Deps, DepsMut, Env, MessageInfo, Order, Response, StdResult,
 };
+use cw2::{get_contract_version, set_contract_version};
 use cw_storage_plus::Bound;
 // use cw2::set_contract_version;
 
 use crate::error::ContractError;
 use crate::execute::execute_instantiate;
 use crate::msg::{
-    ExecuteMsg, InstantiateMsg, PageResult, QueryMsg, PAGINATION_DEFAULT, PAGINATION_LIMIT,
+    ExecuteMsg, InstantiateMsg, MigrateMsg, PageResult, QueryMsg, PAGINATION_DEFAULT,
+    PAGINATION_LIMIT,
 };
 use crate::state::{MSIG, MSIG_CODE_IDS};
 /*
@@ -58,6 +60,11 @@ pub fn execute(
     }
 }
 
+#[cfg_attr(not(feature = "library"), cosmwasm_std::entry_point)]
+pub fn migrate(_deps: DepsMut, _env: Env, _msg: MigrateMsg) -> Result<Response, ContractError> {
+    Ok(Response::default())
+}
+
 #[cfg_attr(not(feature = "library"), entry_point)]
 pub fn query(deps: Deps, _env: Env, msg: QueryMsg) -> StdResult<Binary> {
     match msg {

contracts/msig-launcher/src/msg.rs

@@ -23,6 +23,9 @@ pub enum ExecuteMsg {
     },
 }
 
+#[cw_serde]
+pub struct MigrateMsg {}
+
 #[cw_serde]
 pub struct Pagination {
     pub user: Addr,