Add option to keep states history or not for any device feature

[Pierre-Gilles]

Pull Request check-list

To ensure your Pull Request can be accepted as fast as possible, make sure to review and check all of these items:

• If your changes affects code, did your write the tests?
• Are tests passing? (npm test on both front/server)
• Is the linter passing? (npm run eslint on both front/server)
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Description of change

The user is able to tell Gladys if a device feature should keep the state history or not.

[codecov]

Codecov Report

Base: 96.76% // Head: 96.76% // Increases project coverage by +0.00% 🎉

Coverage data is based on head (4d3637c) compared to base (f2ae7ba).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1599   +/-   ##
=======================================
  Coverage   96.76%   96.76%           
=======================================
  Files         653      654    +1     
  Lines        9640     9658   +18     
=======================================
+ Hits         9328     9346   +18     
  Misses        312      312           

Impacted Files	Coverage Δ
server/lib/device/device.create.js	98.66% <100.00%> (+0.18%)	⬆️
server/lib/device/device.purgeStatesByFeatureId.js	100.00% <100.00%> (ø)
server/lib/device/index.js	100.00% <100.00%> (ø)

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[relativeci]

Job #464: Bundle Size — 7.01MB (+0.07%).

d6f0b2a vs f2ae7ba

Changed metrics (2/10)

Metric	Current	Baseline
Initial JS	2.98MB(+0.14%)	2.97MB
Cache Invalidation	46.23%	50.89%

Changed assets by type (1/7)

	Current	Baseline
JS	4.98MB (+0.09%)	4.98MB

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View Job #464 report on app.relative-ci.com