build: turn on gradle performance options

these seem to be working in Anki-Android repo, should work here?
I suppose we will see

gradle.properties

@@ -18,6 +18,18 @@ android.useAndroidX=true
 # Automatically convert third-party libraries to use AndroidX
 android.enableJetifier=false
 
+# With de-coupled gradle sub-modules, they may run in parallel
+org.gradle.parallel=true
+
+# The default in the future, let's true the future now...
+org.gradle.caching=true
+
+# new feature, should work if we forward-ported our build files correctly
+org.gradle.configuration-cache.parallel=true
+
+# Enable file system watching (should reduce disk IO and increase incremental build speed).
+org.gradle.vfs.watch=true
+
 GROUP=io.github.david-allison
 VERSION_NAME=0.1.47-anki24.11rc1