Add tests for flame_texturepacker

[spydon]

What could be improved

Add tests for flame_texturepacker.

Why should this be improved

Because we should have a well tested codebase.

Any risks?

No.

More information

https://github.com/flame-engine/flame/tree/main/packages/flame_texturepacker

[spydon]

@ycfay this is not related to the issue you posted in, please open a new one (and make sure to format your code properly).

[ryzizub]

@spydon im looking into this one, you can assign it to me :) gonna raise it too 100 💪

[spydon]

Awesome @ryzizub! 💙

[ryzizub]

@spydon im going to tackle this in hacktoberfest can I ask for adding a tag ❤️ ?

[spydon]

@spydon im going to tackle this in hacktoberfest can I ask for adding a tag ❤️ ?

The tag is already on the whole repo which is enough, but I'll add the tag here too! :)