Create a new admonition for linking to Academy resources from docs.

[lzdanski]

Issue Type

Issue with website functionality

Links to Affected Docs

Example: https://docs.astronomer.io/astro/reporting-dashboard

The Issue or Context

We'd like to have admonitions that's more specific for links that point from Docs or Learn to Academy.

• One type of admonition for Academy with the graduation cap icon

• One type of admonition for Video with the video play icon

Fix or Proposed Change

• Create new types of admonitions
• Docs team to replace old admonitions with new ones

Additional Notes

No response

Required Reviewers

No response