[gp] Support `gp env` by talking to server directly

[vymarkov]

I've faced with the issue that doesn't allow to read or write any env variable by using gp cli

1. Set Code as a default editor
2. Open repo https://github.com/stripe-samples/firebase-subscription-payments
3. gp env it will produce the error cannot get environment variables: not found
4. gp env foo=bar it will produce the error cannot get environment variables: not found

Version: 1.52.1
Commit: 791d97eab4a4d591cc12a4784bf263088968c6d3
Date: 2021-02-05T11:45:08.161Z
Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.104 Safari/537.36 OPR/74.0.3911.75

[corneliusludmann]

Thanks for reporting!

/cc @akosyakov

[akosyakov]

We should generally refactor GP to decouple it from Theia as much as possible, i.e. everything besides open and preview.

[csweichel]

Indeed, gp should talk to server directly. We need to take great care to not simply give the workspace token power access to all the user's environment variables.

[csweichel]

We should generally refactor GP to decouple it from Theia as much as possible, i.e. everything besides open and preview.

Very much agree. We should also file issues for those individual work items :)