inbox: use pgp encryption (#70)

* inbox: use pgp encryption && other fixes
* fix inbox key last used at time
* remove inbox items if keys change or same item id syncs

* inbox:update inbox sync item
* rename item field to sync
* add alg field

* sync: delete inbox items after commit succeeds

* user: merge if conditions

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Co-authored-by: Abdullah Atta <abdullahatta@streetwriters.co>

Notesnook.Inbox.API/package.json

@@ -22,7 +22,7 @@
   "dependencies": {
     "express": "^5.1.0",
     "express-rate-limit": "^8.1.0",
-    "libsodium-wrappers-sumo": "^0.7.15",
+    "openpgp": "^6.2.2",
     "zod": "^4.1.9"
   },
   "devDependencies": {