Add test ensure all composables are in compose package

android/test/arch/src/test/kotlin/net/mullvad/mullvadvpn/test/arch/compose/ComposeTests.kt

@@ -0,0 +1,19 @@
+package net.mullvad.mullvadvpn.test.arch.compose
+
+import androidx.compose.runtime.Composable
+import com.lemonappdev.konsist.api.Konsist
+import com.lemonappdev.konsist.api.ext.list.withAllAnnotationsOf
+import com.lemonappdev.konsist.api.verify.assert
+import org.junit.Test
+
+class ComposeTests {
+    @Test
+    fun `all app composables are in the compose packages`() {
+        allAppComposeFunctions().assert {
+            it.fullyQualifiedName.startsWith("net.mullvad.mullvadvpn.compose")
+        }
+    }
+
+    private fun allAppComposeFunctions() =
+        Konsist.scopeFromProduction("app").functions().withAllAnnotationsOf(Composable::class)
+}