ci: add migrate logic (#20)

Author: cosmic-vagabond

src/entry_point/migrate.rs

@@ -0,0 +1,8 @@
+use cosmwasm_std::Empty;
+
+use super::*;
+
+#[cfg_attr(not(feature = "library"), entry_point)]
+pub fn migrate(_deps: DepsMut<ElysQuery>, _env: Env, _msg: Empty) -> StdResult<Response<ElysMsg>> {
+    Ok(Response::new())
+}