Implement fmt::Display on QName, LocalName Prefix and Namespace

[Tpt]

They now all wrap a &str, it makes building error messages easier

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 0% with 13 lines in your changes missing coverage. Please review.
✅ Project coverage is 55.23%. Comparing base (e00ae5c) to head (3d60f5f).
⚠️ Report is 69 commits behind head on master.

Files with missing lines	Patch %	Lines
src/name.rs	0.00%	13 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1010      +/-   ##
==========================================
- Coverage   57.31%   55.23%   -2.08%     
==========================================
  Files          46       51       +5     
  Lines       18197    18735     +538     
==========================================
- Hits        10429    10349      -80     
- Misses       7768     8386     +618     

Flag	Coverage Δ
unittests	55.23% <0.00%> (-2.08%)	⬇️

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