Get IP address

[SimonLab]

ref: #153
Extract ip address from the x-forwarded-for header values

[codecov]

Codecov Report

Merging #156 (b70cce9) into main (6f32a14) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #156   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           11        11           
  Lines           70        74    +4     
=========================================
+ Hits            70        74    +4     

Impacted Files	Coverage Δ
lib/hits_web/controllers/page_controller.ex	100.00% <ø> (ø)
lib/hits.ex	100.00% <100.00%> (ø)
lib/hits_web/controllers/hit_controller.ex	100.00% <100.00%> (ø)

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[nelsonic]

@SimonLab looks good. Thanks! 🎉