chore(docs): Add missing attendee endpoints

[akshat0047]

Fixes #6591

Short description of what this resolves:

Add four endpoints mentioned in the issue to the API Docs

Changes proposed in this pull request:

• added endpoints in attendee api doc

Checklist

• I have read the Contribution & Best practices Guide and my PR follows them.
• My branch is up-to-date with the Upstream development branch.
• The unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[iamareebjamal]

Not useful. This should not even be available

[akshat0047]

Maybe this can be of use in the admin section in listing the participated events of a user, can be included in the issue #6595

[akshat0047]

Actually Circle CI for three of them is failing, with dialogue object not found event_id, ticket_id etc. but they're possible with postman. Inspecting it.

[codecov]

Codecov Report

Merging #6596 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #6596   +/-   ##
============================================
  Coverage        65.03%   65.03%           
============================================
  Files              296      296           
  Lines            15247    15247           
============================================
  Hits              9916     9916           
  Misses            5331     5331

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[akshat0047]

When there is no attendee on event_id or ticket_id in circleci db, dred tests will always fail with object not found. I see the api point for event detail for event_id 1 as working though. Is it meant to be like this or I have to make corrections

[iamareebjamal]

Read about dredd hooks

[akshat0047]

Yeah, I made it, Dredd confused me in the issues, now I know it.