Scaffold native Android build and enforce Rust boundaries (#89)

android/.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*.{kt,kts}]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_size = 4
+ktlint_code_style = android_studio
+ktlint_function_naming_ignore_when_annotated_with = Composable