smp server: journal message store (#1370)

* smp server: remove STM function from MsgStore

* polymorphic MsgStore

* jourmal storage for messages (WIP)

* more journal, test setup

* writeMsg

* test

* tryDelMsg

* delMsgQueue

* remove MsgStoreClass instance of existential wrapper for Msg stores

* store config

* extract common logic out of store instances

* add store type to config

* open journals, cache last message, tests pass

* CLI commands

* refactor import/export messages

* cli commands to import/export journal message store

* export journal without draining, import/export tests

* journal command

* import/export progress

* better progress info

* only log queue state once when importing

* logs

* handle IO errors in journal store, return as STORE error

* recover from state file errors

* fix message files after crash

* fix messages folder

src/Simplex/Messaging/Notifications/Server/Main.hs

@@ -53,7 +53,9 @@ ntfServerCLI cfgPath logPath =
         True -> readIniFile iniFile >>= either exitError runServer
         _ -> exitError $ "Error: server is not initialized (" <> iniFile <> " does not exist).\nRun `" <> executableName <> " init`."
     Delete -> do
-      confirmOrExit "WARNING: deleting the server will make all queues inaccessible, because the server identity (certificate fingerprint) will change.\nTHIS CANNOT BE UNDONE!"
+      confirmOrExit
+        "WARNING: deleting the server will make all queues inaccessible, because the server identity (certificate fingerprint) will change.\nTHIS CANNOT BE UNDONE!"
+        "Server NOT deleted"
       deleteDirIfExists cfgPath
       deleteDirIfExists logPath
       putStrLn "Deleted configuration and log files"