feat: Implement week grid layout for timetable display

- Added WeekGrid composable to visualize weekly timetable with lessons.
- Introduced LessonBlock for individual lesson representation.
- Created theme file for consistent color schemes across the app.
- Developed NextLessonWidget and TodayWidget for home screen integration.
- Implemented Upcoming data class to manage upcoming lessons.
- Added WidgetStyle for dynamic theming in widgets.
- Created SyncWorker for periodic timetable updates and widget refresh.

android/app/build.gradle.kts

@@ -10,15 +10,15 @@ val apiUrl = providers.gradleProperty("PSU_API_URL")
     .map { if (it.endsWith("/")) it else "$it/" }
 
 android {
-    namespace = "ritm.schedule"
+    namespace = "org.xtimms.psu.schedule"
     compileSdk {
         version = release(37) { minorApiLevel = 1 }
     }
 
     defaultConfig {
-        applicationId = "ritm.schedule"
+        applicationId = "org.xtimms.psu.schedule"
         minSdk = 26
-        targetSdk = 36
+        targetSdk = 37
         versionCode = 1
         versionName = "0.1.0"
         buildConfigField("String", "API_URL", "\"${apiUrl.get()}\"")
@@ -27,6 +27,7 @@ android {
     buildTypes {
         release {
             isMinifyEnabled = true
+            isShrinkResources = true
             proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
             // A release build must talk to a public HTTPS server.
             require(apiUrl.get().startsWith("https://") || !gradle.startParameter.taskNames.any { "Release" in it }) {