feat: add project/environment labels to Lagoon build/task pods

[rocketeerbkw]

Checklist

• Affected Issues have been mentioned in the Closing issues section
• Documentation has been written/updated
• PR title is ready for changelog and subsystem label(s) applied

Currently build/task pods have labels that allow selection based on type (build or task) and organization, but I found it would also be useful to select all for a project. For example, if a project has a build image override, it's not possible to select (or modify, eg kyverno) all build/task pods in all environments for a project.

This PR adds project/environment labels for build pods and project labels for task pods.

Closing issues

n/a

[rocketeerbkw]

Created as draft since I haven't even attempted to run/test this, just pushing code for "good idea or bad idea."

[shreddedbacon]

If you're still interested in this, mark it as ready for review. I'm happy to merge it, its pretty small effort for some potential additional value for searching for pods.