Addition to Mobile E2E Testing documentation

[avasconcelos114]

I just got around to setting up mobile E2E testing with detox and would like to add a note on the documentation recommending people to seed their local environment with the make test-data (or mattermost sampledata) command. Similar to how it's already been added to the webapp's E2E documentation

Possibly also adding the fact that you can set the SITE_URL, ADMIN_USERNAME, and ADMIN_PASSWORD env vars would be beneficial to making testing more accessible to people

Would it make sense to add this as a new page called "Local Environment Setup" under "Mobile End-to-End Testing"?

[cwarnermm]

Thank you for this great documentation recommendation, @avasconcelos114. I apologize that you didn't receive a response sooner. Are you interested in creating a PR for this documentation update? It would make sense to add this new content as a new section on the Mobile End-to-End Testing page.

[cwarnermm]

CC @simcard0000 for visibility

[simcard0000]

@cwarnermm Thanks for the ping! It totally can be worked on right now (and made into a PR), but I'll also make a note of this issue in the overall state of (e2e) testing documentation file I made and sent in the Community Onboarding Refresh 2022 channel earlier.