[FEATURE] Support subdirectories in git-repositories as the location of plugins in the plugin-marketplace

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

I would like to use external git-repositories (no github, no gitlab) as source for plugins in my marketplace.
However, there is no support for subdirectories.
Therefore, all repos can only contain a single plugin this way or I need to maintain the plugins directly in my marketplace repository which i do not like

Proposed Solution

I would like to be able to reference plugins in my plugin-marketplace.json that reside in subfolders of external git repos
Something like this: "source": { "source": "git", "url": "ssh://git@my-git.com/hello.git", "ref": "main", "path": "world" }

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Other

Use Case Example

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Additional Context

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