Add fulltext search to onboarding carousel

[MdSahil-oss]

What issue does this PR close?
Closes #6123

What does this PR achieve? [feature|hotfix|fix|refactor]
Add new card of Fulltext searching in the Carousel.

For more Info checkout the issue #6123

Technical

Testing

Screenshot

Stakeholders

[MdSahil-oss]

@tuminzee and @mekarpeles is it okay? or i need to improve it more

[tuminzee]

Hello @MdSahil-oss you failed one of the tests here.
for leads to merge your PR, you will first have to pass all the tests.
You can go in the details section and find out more about why the test failed.

I will assist you on how you can do it
go here

here you can see this error

Fix this one, add a commit. I am sure you will be able to solve it.
If you are stuck let me know :)

[mekarpeles]

lgtm, tested here http://ol-dev1.us.archive.org:1337/
nicely done!