[flutter_local_notifications] [WIP] Windows implementation of notifications

[kennethnym]

This draft PR contains Windows implementation of this plugin. Still a WIP.

Note: dependency_overrides in pubspec.yaml is simply for testing purposes. It will be removed before this PR is merged.

cc @azchohfi
Related issue: #746

[MaikuB]

Thanks, I know it's WIP but thought I'd share some tips

• if you are planning to submit a PR from your fork to any repository, I'd you create a feature branch in your fork for it. This way you can update main/master more easily when the parent repo is updated
• this plugin uses melos so you shouldn't need to override dependencies. Bootstrap melos and you should be set. The docs for melos can be found at https://melos.invertase.dev

[kennethnym]

Thank you. I will make a separate branch in my fork.