Extract logic for "token change-controller" command

[macor161]

🦅 Pull Request

Ref #947

🚨 Test instructions

dao token change-controller

[codecov]

Codecov Report

Merging #972 into develop will increase coverage by 0.33%.
The diff coverage is 43.75%.

@@            Coverage Diff            @@
##           develop   #972      +/-   ##
=========================================
+ Coverage    19.66%    20%   +0.33%     
=========================================
  Files          111    111              
  Lines         2537   2530       -7     
=========================================
+ Hits           499    506       +7     
+ Misses        2038   2024      -14

Impacted Files	Coverage Δ
.../commands/dao_cmds/token_cmds/change-controller.js	0% <0%> (ø)	⬆️
packages/aragon-cli/src/lib/token.js	100% <100%> (ø)	⬆️

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[eternauta1337]

LGTM!