Add create users endpoint

[BrandonRomano]

No description provided.

[codecov-io]

Codecov Report

Merging #3 into master will decrease coverage by 19.33%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           master       #3       +/-   ##
===========================================
- Coverage   66.66%   47.32%   -19.34%     
===========================================
  Files           5        6        +1     
  Lines          93      131       +38     
===========================================
  Hits           62       62               
- Misses         20       58       +38     
  Partials       11       11               

Impacted Files	Coverage Δ
server/server.go	0.00% <0.00%> (ø)
server/users.go	0.00% <0.00%> (ø)

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