DRep search improvements #4030

[Ojly]

List of changes

• Search scope: Changed search scope to the DRep name, and both DRep IDs. The hint text in the search box changed to: "Search for a DRep name or ID"
• Search pagination: Replaced "Show more" button with pagination.
• Search results number: Added "Found XXX out of a total of YYY".
• Search input box: Added a little "X" to clear the search query.

Known issues:

• Pagination doesn't really makes sense for "Random" sorting (eg. any page content would be different each time).
• After going to DRep details and back search input is cleared (the issue was already present before the changes).
• After going to DRep details and back page number resets to 1 (it's really the same issue as search input clearing so it should be fixed along with it)
• Pagination may need some visual changes based on the feedback (it's not one to one with Figma designs).

Checklist

• DRep search improvements #4030
• My changes generate no new warnings
• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the changelog
• I have added tests that prove my fix is effective or that my feature works

[github-actions]

✅ All checks succeeded

[github-actions]

✅ All checks succeeded

[github-actions]

✅ All checks succeeded

[github-actions]

@Ojly
This PR is in the tag: develop-bcf9ac1b0c38b8cabe5c5a0d511b3e292dce5d20 , for govtool-metadata-validation service

[github-actions]

@Ojly
This PR is in the tag: develop-bcf9ac1b0c38b8cabe5c5a0d511b3e292dce5d20 , for govtool-backend service

[github-actions]

@Ojly
This PR is in the tag: develop-bcf9ac1b0c38b8cabe5c5a0d511b3e292dce5d20 , for govtool-frontend service