feat: Implement event publish-unpublish confirm pop-up

[Haider8]

Fixes #4621

Short description of what this resolves:

There was no confirmation when user publish or unpublish his/her event.

Changes proposed in this pull request:

Show confirmation pop-up whenever user tries to publish or unpublish his/her event.

Checklist

• I have read the Contribution & Best practices Guide.
• My branch is up-to-date with the Upstream development branch.
• The acceptance, integration, unit tests and linter 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)

[vercel]

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🔍 Inspect: https://vercel.com/eventyay/open-event-frontend/p60eub4kv
✅ Preview: https://open-event-frontend-git-fork-haider8-confirm-publish-unpublish.eventyay.vercel.app

[codecov]

Codecov Report

Merging #4655 into development will decrease coverage by 0.01%.
The diff coverage is 0.00%.

@@               Coverage Diff               @@
##           development    #4655      +/-   ##
===============================================
- Coverage        23.08%   23.06%   -0.02%     
===============================================
  Files              475      476       +1     
  Lines             4952     4955       +3     
  Branches             8        8              
===============================================
  Hits              1143     1143              
- Misses            3808     3811       +3     
  Partials             1        1              

Impacted Files	Coverage Δ
app/components/modals/publish-unpublish-modal.js	0.00% <0.00%> (ø)
app/controllers/events/view.js	0.00% <0.00%> (ø)

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[iamareebjamal]

Please mark new additions as feat: