feat(core): allow a plugin build script to read the plugin config object

[lucasfernog]

What kind of change does this PR introduce?

• Bugfix
• Feature
• Docs
• New Binding issue #___
• Code style update
• Refactor
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change?

• Yes, and the changes were approved in issue #___
• No

Checklist

• When resolving issues, they are referenced in the PR's title (e.g fix: remove a typo, closes #___, #___)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.
• I have added a convincing reason for adding this feature, if necessary

Other information

[FabianLars]

One thing that came to mind after approving it, what about dashes in plugin names? At least on windows it seems to work fine but dashes in env var names are a pretty rare occurence so idk if it can cause any issues?

[lucasfernog]

Pushed a change just in case @FabianLars but it should work fine, at least on unix that's ok too.