Changed #

• All result.success and result.error calls in Android native code are now wrapped in Handler(Looper.getMainLooper()).post { ... } to ensure safe main thread return.
• This change improves stability and avoids potential crashes or UI threading issues across different Android versions and manufacturers.
• Also avoids blocking the main thread while waiting for platform responses, improving compatibility with Flutter's MethodChannel behavior.

• Improved connectToWifi behavior on iOS:
  • Handles iOS error code 2 (invalid password format) and maps it to INVALID_PASSWORD.
  • Verifies actual connection by comparing current SSID after a short delay.
  • Distinguishes SSID_NOT_FOUND from other connection issues.
• Improved connectToWifi behavior on Android:
  • After onAvailable, verifies the actual connected SSID.
  • If the SSID doesn't match the expected one, returns INVALID_PASSWORD to indicate likely credential issues.

• README and pubspec wording improved for clarity and consistency

• Initial release 🎉
• Connect to Wi-Fi with optional password (iOS and Android)
• Disconnect from Wi-Fi network
• Check current connected SSID
• Full OpResult-based error handling
• joinOnce option supported on iOS
• Example app included for both platforms