refactor(clock): rewrite clock component with custom date formatting

- Remove date-fns dependency and implement custom date/time formatting
- Improve type safety with TimerSettings interface
- Add proper cleanup for interval timer
- Enhance date display with more readable format

Author: jrTilak

package.json

@@ -32,7 +32,6 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "1.0.0",
-    "date-fns": "^4.1.0",
     "lucide-react": "^0.471.1",
     "motion": "^11.18.0",
     "plasmo": "0.90.3",
@@ -76,7 +75,6 @@
       "topSites"
     ],
     "optional_permissions": [
-      "geolocation",
       "history"
     ]
   },