core: support for live messages (#1577)

src/Simplex/Chat/Migrations/M20221214_live_message.hs

@@ -0,0 +1,12 @@
+{-# LANGUAGE QuasiQuotes #-}
+
+module Simplex.Chat.Migrations.M20221214_live_message where
+
+import Database.SQLite.Simple (Query)
+import Database.SQLite.Simple.QQ (sql)
+
+m20221214_live_message :: Query
+m20221214_live_message =
+  [sql|
+ALTER TABLE chat_items ADD COLUMN item_live INTEGER;
+|]

src/Simplex/Chat/Migrations/chat_schema.sql

@@ -367,7 +367,8 @@ CREATE TABLE chat_items(
   quoted_member_id BLOB,
   item_edited INTEGER,
   timed_ttl INTEGER,
-  timed_delete_at TEXT
+  timed_delete_at TEXT,
+  item_live INTEGER
 );
 CREATE TABLE chat_item_messages(
   chat_item_id INTEGER NOT NULL REFERENCES chat_items ON DELETE CASCADE,