Handle recurring events

[abrain]

Show up to 5 upcoming occurrences of recurring events in the calendar.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 21 lines in your changes are missing coverage. Please review.

Project coverage is 59.33%. Comparing base (93c8df0) to head (0d7f417).

Files	Patch %	Lines
...rc/services/calendar-items/calendar-items.class.ts	0.00%	21 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #156      +/-   ##
===========================================
- Coverage    59.93%   59.33%   -0.61%     
===========================================
  Files           81       81              
  Lines          986      996      +10     
  Branches        83       89       +6     
===========================================
  Hits           591      591              
- Misses         383      393      +10     
  Partials        12       12              

Flag	Coverage Δ
server	59.33% <0.00%> (-0.61%)	⬇️

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