Update Gradle and core build dependencies

- Upgrade Gradle wrapper to 9.3.1.
- Update Android Gradle Plugin (AGP) to 9.1.0 and Kotlin to 2.2.10.
- Update Hilt to 2.57.2, Room to 2.7.0, and KSP to 2.3.2.
- Configure Gradle Java toolchain using JetBrains JDK 21 and the Foojay resolver plugin.
- Define several Android build feature flags and compatibility properties in `gradle.properties`.

gradle/libs.versions.toml

@@ -1,17 +1,17 @@
 [versions]
-agp = "8.13.2"
+agp = "9.1.0"
 coreKtx = "1.15.0"
 junit = "4.13.2"
 junitVersion = "1.2.1"
 espressoCore = "3.6.1"
 lifecycleRuntimeKtx = "2.8.7"
 activityCompose = "1.9.3"
-kotlin = "2.1.0"
+kotlin = "2.2.10"
 composeBom = "2025.02.00"
 jellyfin-core = "1.8.5"
-hilt = "2.54"
+hilt = "2.57.2"
 hiltNavigationCompose = "1.2.0"
-ksp = "2.1.0-1.0.29"
+ksp = "2.3.2"
 datastore = "1.1.1"
 kotlinxSerializationJson = "1.7.3"
 okhttp = "4.12.0"
@@ -20,7 +20,7 @@ coil = "3.3.0"
 media3 = "1.9.0"
 media3FfmpegDecoder = "1.9.0+1"
 nav3Core = "1.0.0"
-room = "2.6.1"
+room = "2.7.0"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }