[ingest] store keyhash for ingested files

[MalinAhlberg]

NOTE: This is a copy of PR #1073, created to make the test Build PR container / Build PR image (java) (pull_request) rerun properly and pass.

Related issue(s) and PR(s)
This PR closes #893.

Description

• ingest hex encodes the user's public key and adds it to the files info in the sda.files table
• if the keyhash is not in the sda.encryption_keys, an error is thrown and ingest stops
• code test and integration test are added

How to test Add the hashed public key to sda.encryption_keys and then try to ingest a file. See the integration test for details.