[PE-2546] Add informed delivery docs

[kpflum-lob]

https://lobsters.atlassian.net/browse/PE-2546
Add docs for informed delivery.

Checklist

• Up to date with main
• All the tests are passing
  • Delete all resources created in tests
• Prettier
• Spectral Lint
• npm run bundle outputs nothing suspect
• npm run postman outputs nothing suspect

Changes

Areas of Concern (optional)

[guardrails]

⚠️ We detected 12 security issues in this pull request:

Vulnerable Libraries (12)

Severity	Details
High	pkg:npm/@slack/[email protected] (t) upgrade to: > 6.12.0
High	pkg:npm/@stoplight/[email protected] (t) upgrade to: > 6.11.1
High	pkg:npm/@stoplight/[email protected] (t) upgrade to: > 4.14.1
High	pkg:npm/[email protected] (t) upgrade to: > 1.77.2
High	pkg:npm/@redocly/[email protected] (t) upgrade to: > 1.12.2
Medium	pkg:npm/[email protected] (t) upgrade to: 5.94.0
High	pkg:npm/[email protected] (t) upgrade to: > 0.13.21
High	pkg:npm/[email protected] (t) upgrade to: > 4.3.3
High	pkg:npm/[email protected] (t) upgrade to: > 4.15.2
High	pkg:npm/[email protected] (t) upgrade to: > 6.5.1
High	pkg:npm/[email protected] (t) upgrade to: > 4.2.2
High	pkg:npm/[email protected] (t) upgrade to: > 3.2.1

More info on how to fix Vulnerable Libraries in JavaScript.

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