feat: add Next Lesson widget and enhance existing widgets

- Implemented a new Next Lesson widget to display the upcoming lesson details on the home screen.
- Updated Today widget to dynamically adjust the number of lessons displayed based on available space.
- Enhanced the Settings screen to allow users to manage hidden lessons more effectively.
- Introduced harmonized color palettes for better visual consistency across themes.
- Updated the timetable API to support a new range parameter for semester-based queries.
- Added tests to ensure the new semester range functionality works as expected.
- Refactored widget styling for improved appearance on devices with different Android versions.

android/app/src/main/AndroidManifest.xml

@@ -39,6 +39,29 @@
                 android:resource="@xml/today_widget_info" />
         </receiver>
 
+        <receiver
+            android:name=".widget.NextLessonWidgetReceiver"
+            android:exported="true"
+            android:label="@string/next_widget_name">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
+            </intent-filter>
+            <meta-data
+                android:name="android.appwidget.provider"
+                android:resource="@xml/next_widget_info" />
+        </receiver>
+
+        <service
+            android:name=".tile.LessonTileService"
+            android:exported="true"
+            android:icon="@drawable/ic_tile_lesson"
+            android:label="@string/tile_name"
+            android:permission="android.permission.BIND_QUICK_SETTINGS_TILE">
+            <intent-filter>
+                <action android:name="android.service.quicksettings.action.QS_TILE" />
+            </intent-filter>
+        </service>
+
         <receiver
             android:name=".notify.ReminderReceiver"
             android:exported="false" />