add migration for hmac keys database

xmtp_mls/migrations/2024-12-04-194513_hmac-keys-records-table/down.sql

@@ -0,0 +1 @@
+DROP TABLE IF EXISTS "hmac_key_records";

xmtp_mls/migrations/2024-12-04-194513_hmac-keys-records-table/up.sql

@@ -0,0 +1,11 @@
+CREATE TABLE "hmac_key_records"(
+    -- Group ID that the Hmac keys are associated with
+    "group_id" BLOB NOT NULL,
+    -- Dm ID that the Hmac keys are associated with 
+    "dm_id" TEXT,
+    -- The hmac key
+    "hmac_key" BLOB NOT NULL,
+    -- The number of 30 day periods since epoch
+    "thirty_day_periods_since_epoch" INT NOT NULL,
+    PRIMARY KEY ("group_id", "hmac_key")
+);

xmtp_mls/src/storage/encrypted_store/schema.rs

@@ -58,6 +58,15 @@ diesel::table! {
     }
 }
 
+diesel::table! {
+    hmac_key_records (group_id, hmac_key) {
+        group_id -> Binary,
+        dm_id -> Nullable<Text>,
+        hmac_key -> Binary,
+        thirty_day_periods_since_epoch -> Integer,
+    }
+}
+
 diesel::table! {
     identity (rowid) {
         inbox_id -> Text,
@@ -123,6 +132,7 @@ diesel::allow_tables_to_appear_in_same_query!(
     group_intents,
     group_messages,
     groups,
+    hmac_key_records,
     identity,
     identity_updates,
     key_package_history,