Add Display impl for State

[TTWNO]

• Use display instead of Into
• Fix some formatting so that syntax highlighting is happy

[luukvanderduim]

Good stuff!

[luukvanderduim]

I just saw the clippy run error.
Easiest fix is to use State::from_str instead of into there, I think.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 3 lines in your changes missing coverage. Please review.

Project coverage is 86.93%. Comparing base (d8e2bdb) to head (ee2a44a).
Report is 3 commits behind head on main.

Files	Patch %	Lines
atspi-common/src/state.rs	62.50%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #205      +/-   ##
==========================================
- Coverage   86.95%   86.93%   -0.02%     
==========================================
  Files          40       40              
  Lines        3518     3528      +10     
==========================================
+ Hits         3059     3067       +8     
- Misses        459      461       +2     

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[DataTriny]

Looks good to me, thanks!