Add new AppIcons for iOS and Android

[LBeul]

Implement a fitting icon for both the iOS and Android Launcher instead of the generic Flutter Logo. The Icon was built by myself in Figma and consists of some usual geometric shapes, so no copyright issues with that.

[hungps]

@LBeul Great, thanks! Could you please make a transparent background version for android? Cause it looks better if someone like to theming their OS (like using an icon pack with a custom icon background, rounded icon, etc).

And also don't include pubspec.lock (because your pull request only add icons, not changing the code) and generated files (such as .flutter-plugins-dependencies, ios/Flutter/flutter_export_environment.sh). I forget to ignore them in .gitignore, will add next time. Sorry!

I'm currently refactoring the code and it would be nice if this icon can be used as the refresh indicator and loading indicator icon. If you could add a transparent background version icon (pokeball-logo.png - 40x40) to the assets/images folder, it will be awesome.

Thanks again!

[LBeul]

Hey there.

In commit 26bb53a, I just swapped the Icons for new ones with transparent background and added both a png and svg to the assets as requested by @scitbiz :)

[hungps]

Please uncommit this file

[hungps]

@LBeul Please rebase your code

[LBeul]

@scitbiz should work now

[hungps]

@LBeul You pull request still have conflicts, please rebase and squash into one commit only

[hungps]

I'll close this issue here because there is no action coming up and the master branch has changed. If you still want to add this, please open a new pull request based on the new master branch. Thank you!