Use a non-volatile location for ~/.ddev in Gitpod and Codespaces

[stasadev]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem?

• feat: generalize HOMEDIR management and respect XDG_CONFIG_HOME, fixes #5807 #5813

When you run a project in Gitpod or Codespaces, ~/.ddev directory is not permanent and reset each time the workspace is stopped.
This means that if the user changed some settings with ddev config global, they will disappear.

Describe your solution

I tested #5813 in Gitpod and Codespaces, it works well.

• Gitpod: export XDG_CONFIG_HOME=/workspace/.config && ddev version
• Codespaces: export XDG_CONFIG_HOME=/workspaces/.config && ddev version

We should consider making them a permanent location after v1.23.2 is released.

Describe alternatives

No response

Additional context

No response

[rfay]

This will be a huge step for Gitpod and Codespaces (and Drupalpod). Should simplify Drupalpod and make Gitpod in general easier to use. /cc @shaal