Generate fixtures

[CoMPaTech]

Following the [dict,dict] -> dict move for writing fixtures during testing in tests

Replace manual written fixtures in plugwise-beta by generated ones.

[CoMPaTech]

And yes I realize the new python script if fugly and can be done better, not after diffing too much json and this late/early in the day. Ties in with plugwise/plugwise-beta@566fbb3 of plugwise/plugwise-beta#397

[codecov]

Codecov Report

Merging #308 (4322dbb) into main (d8855af) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #308   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            6         6           
  Lines         2624      2629    +5     
=========================================
+ Hits          2624      2629    +5     

Impacted Files	Coverage Δ
plugwise/constants.py	100.00% <100.00%> (ø)
plugwise/helper.py	100.00% <100.00%> (ø)
tests/test_smile.py	100.00% <100.00%> (ø)

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[bouwew]

LGTM.