feat(fire_atlas): Encoded option to load json instead of .fa

[Arenukvern]

Description

Hello.
I would like to suggest to add option to load atlas without compression as simple json file.
I found it useful to use for example in itch.io, where gzip encoder causes an error during decoding.
Please notice is just a draft, if it is a case that this change can be useful - I will add all relevant documentation and tests if needed.

Thank you for your time!

Checklist

• I have followed the Contributor Guide when preparing my PR.
• I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation in docs and added dartdoc comments with ///.
• I have updated/added relevant examples in examples or docs.

Breaking Change?

• Yes, this PR is a breaking change.
• No, this PR is not a breaking change.

Related Issues

[erickzanardo]

I think this is a great idea! The changes in place right now also look good, I think we should just address this github warning about path not being a dependency of the project, and we should maybe also add a method that saves the atlas as json?

[Arenukvern]

@erickzanardo understood, thank you for your review!
Will make the changes (path & save the atlas as json) this week

[Arenukvern]

@erickzanardo
made changes, could you please take a look?

[luanpotter]

LGTM with one consideration

[spydon]

@Arenukvern do you want to finish this up with that last comment? If not we'll take it over and fix it. :)

[Arenukvern]

@Arenukvern do you want to finish this up with that last comment? If not we'll take it over and fix it. :)

sorry for late answer, got sick and completely lost free time

[spydon]

sorry for late answer, got sick and completely lost free time

No worries, hope you're feeling better now!
The PR is merged and will be included in the next release. :)