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

build.gradle.kts

@@ -0,0 +1,8 @@
+plugins {
+    id("com.android.application") version "8.13.2" apply false
+    id("org.jetbrains.kotlin.android") version "2.0.21" apply false
+    id("org.jetbrains.kotlin.plugin.compose") version "2.0.21" apply false
+    id("org.jetbrains.kotlin.plugin.serialization") version "2.0.21" apply false
+    id("com.google.dagger.hilt.android") version "2.53.1" apply false
+    id("com.google.devtools.ksp") version "2.0.21-1.0.28" apply false
+}