[Fixes #14503] Move document upload and replace to the upload module

[mattiagiupponi]

ref #14503

Checklist

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[mattiagiupponi]

is pointing to the test FE branch, we will change this once the FE is ready too

[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secrets in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
35667410	Triggered	Generic Password	5a76ce7	geonode/upload/handlers/document/tests.py	View secret
34065353	Triggered	Bearer Token	5a76ce7	docs/src/development/api.md	View secret

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