build: vendor pinned flutter_vless Android runtime

Replace build-time pub-cache mutation with a repository-owned pinned runtime so reviewed native source is the source compiled into the app.

local_packages/flutter_vless_android-1.1.5/README.md

@@ -0,0 +1,14 @@
+# flutter_vless_android
+
+The Android implementation of the `flutter_vless` plugin.
+
+## Runtime
+
+Android runtime binaries and geodata are delivered through the Maven Central AAR dependency `dev.tfox.fluttervless:xray-android:26.7.11`. This keeps the Pub.dev package lightweight while preserving the same packaged Xray files in the final Android app.
+
+Do not add raw `android/src/main/jniLibs` or geodata files back to this package. Rebuild runtime files in `android_runtime/xray_android/src/main`, publish the Maven AAR, then publish this wrapper package.
+
+## Emulator Support
+
+The current Maven runtime AAR includes `armeabi-v7a`, `arm64-v8a`, `x86`, and `x86_64`.
+This covers both physical Android devices and Android emulators.