Add methods to enable and disable Airplane Mode on Android

[bartekpacia]

This is already achievable by $.native.tap(), but is a bit, lengthy, and device-dependent.

We'd like to have a more high-level API (like we already have for Wi-Fi, Cellular, and Dark Mode).

We want to get from this:

void main() {
  patrolTest(
    'toggles location',
    nativeAutomation: true,
    ($) async {
      await $.native.openQuickSettings();
      await $.native.tap(const Selector(text: 'Airplane Mode'));
      await $.native.tap(const Selector(text: 'Airplane Mode'));
      await $.native.pressBack();
    },
  );
}

to this:

void main() {
  patrolTest(
    'toggles location',
    nativeAutomation: true,
    ($) async {
      await $.native.enableAirplaneMode();
      await $.native.disableAirplaneMode();
    },
  );
}

Siblings of this issue

• Add methods to enable and disable Bluetooth on Android #282
• Add methods to enable and disable Location on Android #283
• Add methods to enable and disable location on iOS #326