fix(player/abilities): only set allow_flying on Creative mode

[DataM0del]

Fixes #278

Testing

• In Survival, press space bar 2 times and you should be falling / jumping.
• In Creative, press space bar 2 times and you should be flying.

Checklist

Things need to be done before this Pull Request can be merged.

• Code is well-formatted and adheres to project style guidelines: cargo fmt (a963bd7)
• Code does not produce any clippy warnings cargo clippy

[Snowiiii]

Hey, @DataM0del is is currently only done for debugging purposes. If you want to could also just remove the abilities thing entirely.

[DataM0del]

Okay.

[DataM0del]

The linting is failing, will run cargo fmt and cargo clippy to see why.

[DataM0del]

Fixed. It was just a unused import leftover from the check.

[Snowiiii]

LGTM.
Should now also Fix: #278
Thanks @DataM0del