Add CTA for third party framework definitions

[lmiller1990]

Description

#25780 introduces a new public API for adding third party Component Framework Definitions. Unless users are carefully watching our changelog, or encounter our marketing materials, it's not entirely obvious we support this.

To better bring attention to our new feature, we will add a CTA (call to action) on the Launchpad page.

Here's a wireframe from the design team:

https://whimsical.com/app-component-testing-setup-KhaixCtPrqi5v2tGeBZQSD

Acceptance Criteria

• Add text message informing users about third party definitions
• create associated "on" link PR to Cloud repo. The on link will go to a page created by the PR associated with the documentation work.
• "on" link should open in a new browser (this is the behavior for all external links)
  • example PR on adding on links. These go to prod as soon as they are merged into cypress-services/develop.
• "on" link should pass UTM parameters for campaign and medium (TBD)
  • make sure to add forwardQueryParameters to true when configuring the "on" link in the cypress-services repo

Notes/Additional Info

None at this time.

[lmiller1990]

Hey team! Please add your planning poker estimate with Zenhub @astone123 @warrensplayer @ZachJW34 @marktnoonan @mike-plummer