/plugin marketplace add should prefer shallow sparse checkout from pluginRoot #2341
Description
Describe the feature or problem you'd like to solve
Support repos containing stuff beyond just plugins
Proposed solution
Searching through github.com - there is nontrivial amount of repos publishing plugins alongside of the non-plugin code/infra/etc: https://github.com/search?q=path%3A**%2Fmarketplace.json+plugins&type=code
Not to force publisher to separate those into separate repo nor to force user to checkout unrelated stuff to their machines - we can use the pluginRoot metadata to indicate and fetch only relevant plugins.
Example prompts or workflows
dotnet/skills repo has plugins in .\plugins folder. Everything else is not intended for plugins consumers, but for the plugin authors and maintainers
Observing the pluginRoot would help keeping all the maintainer relevant stuff in same repo, while not pushing it to customers machines
Additional context
No response