Redesign of Posts screen for talawa user portal.

[git-init-priyanshu]

What kind of change does this PR introduce?
UI redesign.

Issue Number:

Fixes #1514

Did you add tests for your changes?
Not yet.

Snapshots/Videos:

https://github.com/PalisadoesFoundation/talawa-admin/assets/110045644/fd3fe77f-dcf1-4a56-b427-44c369cd5cf3

If relevant, did you update the documentation?
No.

Summary

Does this PR introduce a breaking change?
No.

Other information
This PR is still in progress.

Have you read the contributing guide?
Yes.

[git-init-priyanshu]

Should I also add functionality to these dropdown items?

[palisadoes]

Don't have the share, and pin post icons.

1. Pinned posts are only for Admins via the Admin portal.
2. We can add sharing at a later stage.

[pranshugupta54]

Please fix type errors

[palisadoes]

Please fix the failing tests

[github-actions]

This pull request did not get any activity in the past 10 days and will be closed in 180 days if no update occurs. Please verify it has no conflicts with the develop branch and rebase if needed. Mention it now if you need help or give permission to other people to finish your work.

[palisadoes]

Please fix the failing test

[codecov]

Codecov Report

Attention: Patch coverage is 97.64706% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 98.23%. Comparing base (872414a) to head (30261c3).

❗ Current head 30261c3 differs from pull request most recent head b73be99. Consider uploading reports for the commit b73be99 to get more accurate results

Files	Patch %	Lines
src/screens/UserPortal/Posts/Posts.tsx	95.45%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1896      +/-   ##
===========================================
- Coverage    98.26%   98.23%   -0.03%     
===========================================
  Files          210      210              
  Lines         5693     5724      +31     
  Branches      1703     1706       +3     
===========================================
+ Hits          5594     5623      +29     
- Misses          93       95       +2     
  Partials         6        6              

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[git-init-priyanshu]

Please do not merge this PR right now. I am adding edit post and delete post functionalities.

[git-init-priyanshu]

This PR is ready to merge now If everything seems fine.