Missing Models and Custom Nodes in ComfyUI, including IP-Adapters (I would like to contribute and try fix this)

When using ComfyUI and running run_with_gpu.bat, importing a JSON file may result in missing nodes. This issue can be easily fixed by opening the manager and clicking on "Install Missing Nodes," allowing us to check and install the required nodes.

However, this functionality does not extend to missing models or IP-adapters.

To address this, I suggest implementing a feature that allows the installation of missing models and other components directly from the manager tab when importing a JSON file. This would streamline the process and ensure all necessary components are installed seamlessly.

I would like to contribute and try fixing this issue.