[url_launcher] Reimplement based on tizen_app_control

[swift-kim]

• Add the tizen_app_control package dependency and remove the previous FFI-based implementation.
• Switch to new analysis options, similarly to [shared_preferences] Switch to new analysis options #287.

Known issue (not caused by this PR): When a launch request is made with no browser app installed on the device, a PlatformException is thrown. In the example app of this plugin, the exception should be handled by a Future error callback inside FutureBuilder, but sometimes "Unhandled Exception" error message is printed out to the console unexpectedly. The symptom is very random and isn't even consistent across devices (tested on mobile emulator, TM1, and watch). It could be a bug in the Dart runtime or the Flutter engine.

[I] flutter: ConnectionState.waiting, hasError: true
[I] flutter: ConnectionState.done, hasError: true
[I] flutter: ConnectionState.waiting, hasError: true
[I] flutter: ConnectionState.done, hasError: true
[I] flutter: ConnectionState.waiting, hasError: true
[I] flutter: ConnectionState.done, hasError: true
[E] [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: PlatformException(-17825759, The application is not found, null, null)
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:607)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156)
<asynchronous suspension>
#2      AppControl.sendLaunchRequest (package:tizen_app_control/app_control.dart:180)
<asynchronous suspension>
#3      UrlLauncherPlugin.launch (package:url_launcher_tizen/url_launcher_tizen.dart:43)
<asynchronous suspension>
#4      launch (package:url_launcher/url_launcher.dart:101)
<asynchronous suspension>
#5      _MyHomePageState._launchInBrowser (package:url_launcher_example/main.dart:55)
<asynchronous suspension>
[I] flutter: ConnectionState.waiting, hasError: true
[I] flutter: ConnectionState.done, hasError: true

[bbrto21]

Cool!