Upload files mandatory

[GauravD2t]

References

• Fixes Define upload of files mandatory or optional per collection DSpace#8965
• Requires DSpace/DSpace#pr-number (if a REST API PR is required to test this)

Description

dspace.upload.required metadata field on the Collection.

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[tdonohue]

@GauravD2t : This PR seems to be invalid as it adds a very large number of unrelated files... there's over 41,000 new lines of code, which doesn't seem correct to me. I'd recommend either fixing this PR's branch. Or, if it's easier, you could close this PR & trying to create a new PR with the changes that you want to submit.