chore: update VSCode settings, clean up mail.py, and upgrade PyQt6 UI generator version

.vscode/settings.json

@@ -31,8 +31,27 @@
   "python.testing.pytestEnabled": true,
   "cSpell.words": [
     "adis",
+    "Adminbereich",
+    "Apparatdetails",
     "apparate",
+    "appname",
+    "appnr",
+    "autoadder",
+    "availchecker",
+    "bookgrabber",
+    "chkbx",
+    "drpdwn",
     "isbn",
-    "ISSN"
+    "ISSN",
+    "mand",
+    "profdata",
+    "profname",
+    "qrichtext",
+    "Segoe",
+    "semesterapparate",
+    "Semesterapparatsmanagement",
+    "Semesterapparatsteam",
+    "Strg",
+    "telnr"
   ],
 }