Release 0.2.44 and Quest app 0.5.0

Bump the backend to 0.2.44 and the Quest app to versionCode 5 / 0.5.0-quest,
the first release to ship Darthcircuit's Quest 1 build beside the modern one.

android/app/build.gradle.kts

@@ -104,8 +104,8 @@ android {
         // Quest 2 ships Android 10 (API 29); AHardwareBuffer/Vulkan 1.1 need 26+.
         minSdk = 29
         targetSdk = 34
-        versionCode = 4
-        versionName = "0.4.0-quest"
+        versionCode = 5
+        versionName = "0.5.0-quest"
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
 
         for ((name, value) in discPins) {