[Product Partnerships] Added Amazon CloudSearch Entity

[SuruchiSaboo]

[Product Partnerships] Added Amazon CloudSearch Entity

Pre merge checklist

• Did you check you NRQL syntax? - Does it work?
• Did you include a Data source and Documentation reference?
• Are all documentation links publicly accessible?
• Did you check your descriptive content for voice and tone?
• Did you check your descriptive content for spelling and grammar errors?
• Did you review your content with a subject matter expert? (e.g. a Browser agent quickstart is reviewed with a member of the Browser Agent team)

Dashboards

• Does the PR contain a screenshot for each of your dashboards?
• Do your screenshots show data?
• Has the sanitization script been run on each dashboard?

Alerts

• Did you check that your alerts actually work?

[github-actions]

Thank you for your contribution, our team will be reviewing this shortly, please be available for any follow up questions or code review feedback!