feat: enable oss contribution to deno from any device via Gitpod

[Siddhant-K-code]

:wave: Hey Folks,

Siddhant here from Gitpod. @ghuntley dropped by your Discord the other day to share the news the members of the Deno GitHub org have been added as being eligble for our complementary plan for open-source maintainers. This PR enables development of deno on any device on Gitpod and enables community members to contribute more easily by adding a single YAML file to your repository which essentially removes the need to even have your developer setup guide :rocket: just mash the button below:

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[CLAassistant]

All committers have signed the CLA.

[stale[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed in 7 days if no further activity occurs. Thank you for your contributions.