ui/services: add integration key filter for services list

[KatieMSB]

• Identified the issue which this PR solves.
• Read the CONTRIBUTING document.
• Code builds clean without any errors or warnings.
• Added appropriate tests for any new functionality.
• All new and existing tests passed.
• Added comments in the code, where necessary.
• Ran make check to catch common errors. Fixed any that came up.

Description:
This PR adds a new filter option for integration keys on the services list page.

Which issue(s) this PR fixes:
Fixes #2545

Screenshots:

Describe any introduced API changes:
Adds new search query for integration keys and updates existing services search to include new filter option.

type IntegrationKeyConnection {
  nodes: [IntegrationKey!]!
  pageInfo: PageInfo!
}

input IntegrationKeySearchOptions {
  first: Int = 15
  after: String = ""
  search: String = ""
  omit: [String!]
}

# Allows searching for integration keys.
integrationKeys(input: IntegrationKeySearchOptions): IntegrationKeyConnection!

[tony-tvu]

LGTM! Also thanks for converting JS files to TS 😃

[m17ch]

LGTM 👍