Re-design the deposit page https://deposit.softwareheritage.org/

Improve page to be useful for deposit users:

• clients that deposit software
• administrators that needs to access the deposit moderation view

To improve this page:

1. update links to docs.softwareheritage.org (swh/meta#4624)
2. query box
3. entrance to the deposit collections
   • now: HAL, IPOL, elife (like on archive.softwareheritage.org)
   • 2025: InvenioRDM/Zenodo, DataVerse, Dagstuhl, Episciences, swMath, OpenAire
   • new clients upon arrival
4. access link todocumentation on how to become deposit clients

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Migrated from T3936 (view on Phabricator)