Support Flutter 3.10

[Zazo032]

Refactored many parts of the code to follow with latest linter rules.
Fixes #57

Until this PR is merged, you can use the plugin like this:

flutter_painter:
  git:
    url: https://github.com/Zazo032/flutter_painter.git

[1.1.0]

• Update internal dependencies
• Update minimum Dart version to 3.2
• Update minimum Flutter version to 3.16

[bobekos]

@omarhurani
Please merge this in. Now with flutter 3.10 your are not able to build the app because accentColor was removed.

@Zazo032
Nice work.

[ayansg]

Thanks @Zazo032 for the temporary workaround.

[Zazo032]

@omarhurani could you merge this and release a new version?

[lcundiff]

@omarhurani ETA on when this will be merged?