Spring improvements

[golles]

• Single instance restriction has been removed
• Improve translations for error messages
• Improve develop script, to not reset the dev container every restart
• Add update script, to update all dependencies, including test dependencies
• Improve tests (eg. a fix Lingering timers)
• Implement upstream changes
  • Coordinator code moved to coordinator.py

[codecov]

Codecov Report

Patch coverage: 75.58% and project coverage change: -16.39 ⚠️

Comparison is base (9f3997d) 75.69% compared to head (a9d5420) 59.31%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main      #91       +/-   ##
===========================================
- Coverage   75.69%   59.31%   -16.39%     
===========================================
  Files           7        8        +1     
  Lines         358      349        -9     
===========================================
- Hits          271      207       -64     
- Misses         87      142       +55     

Impacted Files	Coverage Δ
custom_components/kamstrup_403/const.py	100.00% <ø> (ø)
custom_components/kamstrup_403/diagnostics.py	0.00% <0.00%> (ø)
custom_components/kamstrup_403/coordinator.py	67.34% <67.34%> (ø)
custom_components/kamstrup_403/config_flow.py	92.10% <82.35%> (-3.55%)	⬇️
custom_components/kamstrup_403/__init__.py	100.00% <100.00%> (+13.79%)	⬆️
...tom_components/kamstrup_403/pykamstrup/kamstrup.py	14.28% <100.00%> (-38.35%)	⬇️
custom_components/kamstrup_403/sensor.py	97.14% <100.00%> (+2.85%)	⬆️

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.

[golles]

The drop in test coverage isn't satisfying and will be improved later. This PR will be merged as this will unblock #86 #88 and #90