feat(admin): Improve commands + add spawn and learnspell

[vincent4vx]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 91.36691% with 12 lines in your changes are missing coverage. Please review.

Project coverage is 96.37%. Comparing base (f0e6ede) to head (ea8318b).
Report is 2 commits behind head on master.

Files	Patch %	Lines
.../quatrevieux/araknemu/game/admin/player/Spawn.java	84.21%	10 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #339      +/-   ##
============================================
- Coverage     96.38%   96.37%   -0.02%     
- Complexity     9111     9142      +31     
============================================
  Files          1405     1407       +2     
  Lines         23289    23419     +130     
  Branches       1484     1501      +17     
============================================
+ Hits          22448    22570     +122     
- Misses          634      640       +6     
- Partials        207      209       +2     

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