[DE-671]: GET + PUT /_api/admin/license

[aMahanna]

• Introduces license() and set_license() to get & set the license of an ArangoDB EE Instance

[codecov-commenter]

Codecov Report

Merging #285 (a416b18) into main (744a6e9) will decrease coverage by 0.48%.
Report is 17 commits behind head on main.
The diff coverage is 92.24%.

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@@            Coverage Diff             @@
##             main     #285      +/-   ##
==========================================
- Coverage   99.01%   98.53%   -0.48%     
==========================================
  Files          26       26              
  Lines        3958     4031      +73     
==========================================
+ Hits         3919     3972      +53     
- Misses         39       59      +20     

Files Changed	Coverage Δ
arango/client.py	98.41% <ø> (ø)
arango/http.py	100.00% <ø> (ø)
arango/database.py	99.34% <81.25%> (-0.52%)	⬇️
arango/collection.py	97.41% <92.92%> (-1.09%)	⬇️
arango/exceptions.py	100.00% <100.00%> (ø)
arango/request.py	94.44% <100.00%> (ø)
arango/utils.py	87.50% <100.00%> (-12.50%)	⬇️

... and 2 files with indirect coverage changes