Remove Test Cases from Search Result and New Search bar where they could be searched

[pragyach]

Checklist

• [x] My branch is up-to-date with the upstream develop branch.
• [x] I have added necessary documentation (if appropriate).

Which issue does this PR fix?: fixes: #67

Why do we need this PR?:

This pr completely solves issue#67.Test cases are removed from main search engine.Second search bar is enabled for handling these testing algorithms so they do not go waste.

Demo (optional): Before:- After:-When test is typed in first search bar i.e. main search bar.

When test is typed in second search bar

Testing instructions:

No more work is left as it was discussed with @arnavb.But could work on better way to display these test cases.

TODOs (if any):

[AdiChat]

Nice work :+1:

Having two search bars will confuse users.

Ideally, users may not search for test files and might want to go to particular implementations. That being said, we can associate test files with respective codes and display them when the codes are displayed within Cosmos Search (a future feature). Associating test files will give users additional insights into the various possible test case scenarios for the particular algorithm.