Add feature for viewing submissions and searching by name and form name

[bismitaguha]

Description

• Added list view of submissions
• Added feature for search by form name and user name
• Added feature to view user profile and specific form responses
• In the User profile, you can view their general details, Zulip stats & summary of all forms filled by them

Fixes #49

Type of Change:

• Code
• User Interface

Code/Quality Assurance Only

• New feature (non-breaking change which adds functionality pre-approved by mentors)

How Has This Been Tested?

• submission/
  

• submission/:user_id
  

• preview/:form_id/:user_id -> To view the responses of a specific form for a specific user
  

Checklist:

• My PR follows the style guidelines of this project
• I have performed a self-review of my own code or materials
• I have commented on my code or provided relevant documentation, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Any dependent changes have been merged

Code/Quality Assurance Only

• My changes generate no new warnings
• Any dependent changes have been published in downstream modules

[bismitaguha]

CSS work left!

[sidvenu]

LGTM till now - just remove the test log. Is this PR WIP?

[sidvenu]

Is this PR WIP or done? If done, please request a review. If not, please add 'WIP' to the title.

[bismitaguha]

@abha224 @sidvenu This PR will require changes after the merge of the Zulip Stats PR. Please do not merge before that!!!

[isabelcosta]

Will close due to inactivity, and make the issue available again.
Thank you for starting this work @bismitaguha