Add gitpod as a tool to browser code lines

Created by: LinuxSuRen

If you want to try this PR, please visit here. But please remember that this link only works before this PR gets merged. You can use the master branch once the PR gets merged.

What type of PR is this? /kind cleanup

What this PR does / why we need it: Make it be easier to run the front-end for the newcomers.

Which issue(s) this PR fixes: None.

Special notes for reviewers: None.

Additional documentation, usage docs, etc.: None.