Badge request: Locked npm dependency version from package-lock.json

:clipboard: **Description**

[](https://img.shields.io/npm/v/mermaid?color=teal&label=mermaid&logo=npm)
Shows the exact version of a package found in `package-lock.json`.

:link: **Data**

Retrieving the data should function pretty much the same way as it already works for `package.json`.

:microphone: **Motivation**

This badge should co-exist with the already existing `package.json` badge. The only difference would be that it gets the module's version from `package-lock.json` which allows you to show on which exact version of a package your code currently depends on.

Start by locating the existing package.json badge implementation and its data-retrieval entry point, then compare how a dependency is represented in package-lock.json. Done means the badge can report the exact locked package version while co-existing with the package.json badge; check the existing badge tests or endpoint behavior for consistency.

Written by the indexing model from the issue text.