Improve get_uuid and get_uuids

[Lucino772]

• get_uuid returns a string
• get_uuids returns a dict of string and string
• Fix tests for get_uuid & get_uuids
• Remove UUIDInfo class
• Update V2 Roadmap in README

[codecov-commenter]

Codecov Report

Merging #21 (d4fe392) into main (3ce234a) will decrease coverage by 0.50%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #21      +/-   ##
==========================================
- Coverage   46.68%   46.17%   -0.51%     
==========================================
  Files          29       29              
  Lines         951      942       -9     
  Branches      125      123       -2     
==========================================
- Hits          444      435       -9     
  Misses        493      493              
  Partials       14       14              

Impacted Files	Coverage Δ
mojang/api/structures/base.py	53.57% <ø> (-7.04%)	⬇️
mojang/api/base.py	94.91% <100.00%> (-0.33%)	⬇️

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