Extending management frontend

[sachinsom93]

Description

Extending Management Frontend by adding components to show TSV, TXT data of extracted data, created flask API for sending all the cases files to the frontend.

Fixes #203

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Also, include screenshots for the verification and reviewing purpose. Working GIF:-

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules

[sachinsom93]

@shivanshu1333 sir, please take a look :)