Provision git name or email with data from personal access tokens

[skabashnyuk]

Is your task related to a problem? Please describe

Provide some defaults from git name and email configuration.

Describe the solution you'd like

If no defaults for git name and email configuration is set and if user's namespace contains personal access token of some SCM providers (Github, Bitbucket, Gitlab) we can use PAT to repopulate git configuration.

Describe alternatives you've considered

No response

Additional context

devfile/devworkspace-operator#708

[skabashnyuk]

Closing. I think it is better to set up this data explicitly.

[l0rd]

@skabashnyuk I am no sure why it should be better to set this data explicitly so I am re-opening this issue as I think that this feature adds a lot of value to Che.

[l0rd]

A few notes:

1. the configmap should have the following annotation and labels:

...
metadata:
  annotations:
    controller.devfile.io/mount-as: subpath
    controller.devfile.io/mount-path: /etc/
  labels:
    controller.devfile.io/mount-to-devworkspace: "true"
    controller.devfile.io/watch-configmap: "true"
...

2. The configmap should have a gitconfig entry in the data section:

...
data:
  gitconfig: ...

3. ⚠️ If a ConfigMap with those annotations/labels/data.gitconfig exist we should NOT create a new ConfigMap (otherwise the user won't be able to start workspaces).