feat: adding calendar for Bins in Custom Component

[robbrad]

Adding a calendar type to allow people caldendar entries as well as sensor

[codecov]

Codecov Report

Attention: Patch coverage is 76.92308% with 15 lines in your changes missing coverage. Please review.

Project coverage is 72.92%. Comparing base (dde4170) to head (4445d38).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
custom_components/uk_bin_collection/calendar.py	81.35%	11 Missing ⚠️
custom_components/uk_bin_collection/__init__.py	20.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #973      +/-   ##
==========================================
+ Coverage   72.52%   72.92%   +0.39%     
==========================================
  Files           8        9       +1     
  Lines         950     1012      +62     
==========================================
+ Hits          689      738      +49     
- Misses        261      274      +13     

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[m26dvd]

@robbrad Awesome work! Just upgraded and calendars work perfectly after reconfiguring my service!

[robbrad]

@m26dvd kudos to you tbh. All your hard work on the councils spurred me on to make this integration even better!

I'm working on Alexa now