Add documentation detailing the basic Trinsic Connect flow

[geel9]

• Adds a short section in the integration example of Trinsic Connect detailing the typical integration flow
• Adds a link in the Connect API reference documentation to the above-mentioned documentation section

[github-actions[bot]]

Preview docs site for JC/connect-docs-prose@ac409022 Changed paths:

1. docs/examples/idv-browser.md
2. docs/reference/proto/index.md
3. docs/reference/services/connect-service.md