Add TOKIT Smart Rice Cooker (tokit.cooker.tk4001)

[oooohhoo]

Add tokit.cooker.tk4001 device support.

[codecov]

Codecov Report

Attention: Patch coverage is 39.81900% with 133 lines in your changes missing coverage. Please review.

Project coverage is 81.15%. Comparing base (8643a57) to head (b418a87).
Report is 4 commits behind head on master.

Files	Patch %	Lines
...o/integrations/chunmi/cooker_tokit/cooker_tokit.py	38.88%	132 Missing ⚠️
miio/click_common.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1961      +/-   ##
==========================================
- Coverage   81.41%   81.15%   -0.27%     
==========================================
  Files         193      199       +6     
  Lines       18636    19346     +710     
  Branches     4045     4257     +212     
==========================================
+ Hits        15173    15700     +527     
- Misses       3180     3348     +168     
- Partials      283      298      +15     

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