feat: add search to database collections

[orellazri]

What does this PR do?

Add a search bar to the database collections page to allow filtering collections.

Test Plan

• No search query: Shows all collections
• Searching for a query: Filters results according to said query
• Searching for a query with no results: Shows the EmptySearch component
• Clicking "Clear Search": Returns to the original page showing all collections

Related PRs and Issues

#318

Have you read the Contributing Guidelines on issues?

Yes

[vercel]

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