uploading data via web interface

[scheidtdav]

Description

Uploading the measurement data via csv or json to be stored in the database.

Use case

• Restoring historical data when there has been a connection issue
• Devices that only log to SD card and get dumped to the database later on

Implementation ideas (optional)

There is already an option for data upload in app/components/mydevices/dt/columns.tsx which points to device.$devideId.dataupload.tsx, but it is currently disabled.
That means there is already a bunch of UI done but it has to be tested and wired up against the current backend implementation.
Loose ends may have to be closed as well.

Additional information (optional)

No response