add new storage for announcements

Author: l0r1s

pallets/subtensor/src/lib.rs

@@ -1369,6 +1369,12 @@ pub mod pallet {
         DefaultColdkeySwapScheduled<T>,
     >;
 
+    /// A map of the coldkey swap announcements from a coldkey
+    /// to the block number the announcement was made and the new coldkey.
+    #[pallet::storage]
+    pub type ColdkeySwapAnnouncements<T: Config> =
+        StorageMap<_, Twox64Concat, T::AccountId, (BlockNumberFor<T>, T::AccountId), OptionQuery>;
+
     /// --- DMAP ( hot, netuid ) --> alpha | Returns the total amount of alpha a hotkey owns.
     #[pallet::storage]
     pub type TotalHotkeyAlpha<T: Config> = StorageDoubleMap<