#238 Improve calendar functionality

[shema-surge]

PR Description

This PR implements the event invitations and and event cancelling calendar functionalities

Description of tasks that were expected to be completed

1. Inviting trainees in the created event
2. Cancelling events
3. Accepting and declining Invitations
4. Updating event and guests

Functionality

How has this been tested?

This feature was tested in ApolloStudio

PR Checklist:

• Task 1. Inviting trainees in the created event
• Task 2. Cancelling events
• Task 3. Accepting and declining Invitations
• Task 4. Updating event and guests

Track PR

Trello Link (#DP-?)

Screenshots (If appropriate)

(Images)

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 12.90323% with 162 lines in your changes missing coverage. Please review.

Please upload report for BASE (develop@3c32210). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
src/resolvers/eventResolver.ts	6.32%	148 Missing ⚠️
src/helpers/sendEventEmails.ts	35.71%	9 Missing ⚠️
src/utils/templates/eventInvitationTemplates.ts	44.44%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             develop     #290   +/-   ##
==========================================
  Coverage           ?   17.69%           
==========================================
  Files              ?       85           
  Lines              ?     2882           
  Branches           ?      819           
==========================================
  Hits               ?      510           
  Misses             ?     2363           
  Partials           ?        9           

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[RWEMAREMY]

Good job

[JacquelineTuyisenge]

1. I suggest in getting events and accepted events, you can also include their status
2. after cancelling an event, you can turn the message for ex: '... cancelled successfully'

Others Looks good