[no bump] Ghost Mode: AyuGram's ghost mode with per-account and per-chat settings

Read receipts, story views, typing and online status are held back per
the options; read on interact, scheduled and silent sending as in AyuGram.
Every option resolves chat -> account -> global; forum topics follow
their group. Settings live in the plugin page, a chat/profile menu popup,
and a drawer row for the current account.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

plugin.json

@@ -1,7 +1,7 @@
 {
-  "id": "hello_bundle",
-  "name": "Hello Bundle",
-  "description": "Multi-file exteraGram plugin built by tools/bundle.py",
+  "id": "ghost_mode",
+  "name": "Ghost Mode",
+  "description": "AyuGram's ghost mode: don't read messages or stories, don't send online or typing, go offline automatically, read on interact, scheduled and silent sending. Every option can be set globally, per account and per chat.",
   "author": "@lyuksovannyy",
   "version": "1.0.0",
   "icon": "exteraGramPluginIcons/5",