Onboard NGINX using integrations (part one)

[mdbirnstiehl]

Document the user flow for onboarding nginx logs and metrics using the integration, exploring those logs and metrics, and finding and resolving issues.

Iteration 1:

• Overview of nginx
  • What you’ll learn
  • Prerequisites
• Add and configure nginx integration
• Configure and install agent
  • Standalone (start here)
  • Fleet
• Explore logs and metrics

Iteration 2: #3717

[bmorelli25]

@mdbirnstiehl to outline end-to-end flow, identify parts, and break into smaller chunks