Add the native Hesychia Android client so the repo can build beyond the placeholder README.

gradle.properties

@@ -0,0 +1,8 @@
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+android.useAndroidX=true
+kotlin.code.style=official
+android.nonTransitiveRClass=true
+org.gradle.parallel=true
+
+# Enabled parallel sync for Gradle 9.4+
+org.gradle.tooling.parallel=true