Adds a subcommand, invocable with paperless-cli upload [Files...)
Checklist
For Code changes
[x] Categorize the PR by setting a good title and adding one of the labels:
kind:bug, kind:enhancement, kind:documentation, kind:change, kind:breaking, kind:dependency
as they show up in the changelog
Summary
paperless-cli upload [Files...)
Checklist
For Code changes
kind:bug
,kind:enhancement
,kind:documentation
,kind:change
,kind:breaking
,kind:dependency
as they show up in the changelog