Add integration logo: Datadog

Background

Please see parent epic: &8370

Instructions

For UX:

• Check the Third-party trademark tracker to see if the logo has gone through the approval process
• Add approved logo to SVG library
• Once logo has been added to SVG library, remove UX label and apply frontend workflowready for development

For Frontend:

• frontend add approved logo from SVG library to: integrations list view
• frontend add approved logo from SVG library to: integration details view