Add Aurora Livecam video player enhancements

- Add SettingsManager class for admin settings (settings.json)
- Add timelapse controls with slider, speed (1x/10x/100x), and reverse playback
- Add daily video player to play videos in main player window
- Add admin settings panel for viewer display and video mode configuration
- Add CSS styles for new player controls
- Include integration guide for existing index.php

aurora-livecam/settings.json

@@ -0,0 +1,16 @@
+{
+    "viewer_display": {
+        "enabled": true,
+        "min_viewers": 1
+    },
+    "video_mode": {
+        "play_in_player": true,
+        "allow_download": true
+    },
+    "timelapse": {
+        "default_speed": 1,
+        "available_speeds": [1, 10, 100]
+    },
+    "last_updated": null,
+    "updated_by": null
+}