Native Signature Pad in Qfield

[jonnyforestGIS]

Description

Ability to sign a form and be used in the atlas PDF or integrated as an image in QField Form.

Potential ideas paths:

• Integrated as a native signature widget;
• Call an external App (ex.: Signature Pad App) and save the image in the project folder and treat the signature field and photo attachment. - It's possible but demands an extra configuration. Ex: Create an approach similar to the Map button explained in the documentation.
• Integrate as QML widget set in the QGIS project (Try to search an example using qt quick but I didn't find for now I'm sorry).
• Integrate as HTML widget set in the QGIS project. (Ex.: http://szimek.github.io/signature_pad/). I tried this approach using a local folder but I probably did it the wrong way.

Where can be used

Embebed in the QField form;
Embebed in Atlas PDF;
Sync in the Cloud (?);

Feel free to close if this idea doesn't make sense.
Cheers

Found a Feature Request talking about this: #3445