Enhanced error handling for failed asset upload

[#1]

Request for Feature Enhancement (RFE) Summary:	Failed Asset Bulk Uploads Error is replaced with a more specific error or lets correct assets upload
Use-case:	User need to understand which file is causing errors during upload, elsewise they need to uplaod one by one.
Current/Experienced Behavior:	Whenever a user is uploading assets in bulk and only one asset is faulty (unsupported filetype, or other) the whole upload errs and one generic error message is displayed.
Improved/Expected Behavior:	The error message specifies the impacted asset(s) or all correct assets are uploaded and only the faulty assets get rejected (and generate an error message)
Environment Details (AEM version/service pack, any other specifics if applicable):	AEM Assets Author instance
Customer-name/Organization name:	ALDI SUED (Marketing Solutions)
Screenshot (if applicable):	Example of faulty file:  I couldn't upload the asset here, so please use this sft link:
Code package (if applicable):