[SuperAdmin] Add optional word clause to query for providers

[ecurrencyhodler]

Context

I'd like to be able to filter for providers when looking at bounties inside of superadmin.

We are currently grabbing bounties using this call: metrics/bounties.

Add an optional word clause to search for providers and their bounties only. In other words, don’t search for anything other than the selected providers and their bounties within a given date range.

Also enable "or" statements so that multiple providers and the bounties they posted are returned.

Design

This is what the frontend will look like for reference (without the search bar).

Acceptance Criteria

• I've tested on Chrome
• I've created mock db with 3 different providers each with 2 bounties.
• I've created a test asserting the response we get from the call only returns bounties from selected providers.
• I have rebased and tested locally before submitting my PR
• I can submit a pr within 2 days of taking the bounty

Here is an example backend test

[FaisalIqbal211]

@ecurrencyhodler assign me?

[ecurrencyhodler]

It's yours @FaisalIqbal211 let's get a PR up within 2 days.

[FaisalIqbal211]

@ecurrencyhodler Just want to confirm, provider means the owner of bounty. Am I correct?

[ecurrencyhodler]

Yup that's correct. The person who created the bounty.

[ecurrencyhodler]

Paid 200k sats! https://community.sphinx.chat/bounty/1557