Added Group's and Policy's search functionality in webUI

[Annaseli]

Change Description

Background

Previously, there was no way to search for Groups and Policies in the Administration tab of the web UI.

New Feature

This PR introduces a search box in the Groups and Policies tabs in the Administration section of the web UI.

Functionality:

1. Prefix Search – The search box performs a prefix search on the user’s input, returning all groups and policies whose names start with the given prefix.
2. API Prefix Search – The search utilizes the prefix parameter in the API call to retrieve only the filtered results.
3. Case-Sensitive – The search is case-sensitive, meaning it distinguishes between uppercase and lowercase letters.
4. Real-Time Search – The user does not need to press "Enter" to submit the input; results appear immediately as they type.
5. Debounced API Calls – To optimize performance, API requests are debounced by 300ms, reducing unnecessary calls.
6. Supports Pagination – If the search results exceed the default page size, they are displayed in pages, maintaining the prefix filter.
7. Search Persistence After Refresh – After a page refresh, the previous search prefix remains applied, with an indicator showing the last input.

Limitations:
If no results match the search, an empty window is displayed, similar to the Repository search behavior.

Screenshots:

Testing Details

Tested with Fluffy and lakeFS OSS locally.

[github-actions]

E2E Test Results - DynamoDB Local - Local Block Adapter

[github-actions]

E2E Test Results - Quickstart

[itaigilo]

Thanks @Annaseli , this looks great!

Requesting changes only for a minor simplification, and make sure nothing is missed there.

[itaigilo]

Looking great! 🎉

Approving,
And adding a bunch of nit suggestions, on the same issue (your choice if you want to add it).

[Annaseli]

Looking great! 🎉

Approving, And adding a bunch of nit suggestions, on the same issue (your choice if you want to add it).

Added your suggestions :)