add Quit method to Service interface

[melekes]

remove deprecated QuitService

Refs #114

[codecov-io]

Codecov Report

Merging #150 into develop will increase coverage by 0.04%.
The diff coverage is 66.66%.

@@             Coverage Diff             @@
##           develop     #150      +/-   ##
===========================================
+ Coverage    62.67%   62.72%   +0.04%     
===========================================
  Files           58       58              
  Lines         4236     4233       -3     
===========================================
  Hits          2655     2655              
+ Misses        1368     1365       -3     
  Partials       213      213

Impacted Files	Coverage Δ
common/service.go	55.55% <66.66%> (+2.92%)	⬆️

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