Adds support for showing the Pulumi Copilot sidebar on the docs site

[foot]

Proposed changes

Adds support for showing the Pulumi Copilot sidebar on the docs site

Notes

• Adds a route to the copilot host so that the iframe is SAMEORIGIN with the docs
  • This allows it to React.portal into the doc and interact w/ the page a bit.
  • This requires some tweaks to SecurityPolicy to allow the Copilot path to be iframe'd too

[pulumi-bot]

Your site preview for commit 74c06eb0 is ready! :tada:

http://www-testing-pulumi-docs-origin-pr-12905-74c06eb0.s3-website.us-west-2.amazonaws.com.

[pulumi-bot]

Your site preview for commit d48e787a is ready! :tada:

http://www-testing-pulumi-docs-origin-pr-12905-d48e787a.s3-website.us-west-2.amazonaws.com.

[pulumi-bot]

Your site preview for commit a652c7e9 is ready! :tada:

http://www-testing-pulumi-docs-origin-pr-12905-a652c7e9.s3-website.us-west-2.amazonaws.com.

[pulumi-bot]

Your site preview for commit 1c8f1412 is ready! :tada:

http://www-testing-pulumi-docs-origin-pr-12905-1c8f1412.s3-website.us-west-2.amazonaws.com.

[pulumi-bot]

Your site preview for commit 6fb3781f is ready! :tada:

http://www-testing-pulumi-docs-origin-pr-12905-6fb3781f.s3-website.us-west-2.amazonaws.com.