Improve signature canvas with new Ink API

[Basler182]

Problem

The current consent form uses a basic canvas for signature input, which works great but still could provide a smoother user experience with more advanced features.

https://github.com/StanfordSpezi/SpeziKt/blob/main/modules/onboarding/src/main/kotlin/edu/stanford/spezi/module/onboarding/consent/SignatureCanvas.kt

Solution

Upgrade the signature feature to utilize the newly introduced Ink API from October 24, which offers better handwriting and ink capture, improving precision and usability. Relevant documentation:

Introducing Ink API
Ink API Release

Additional context

This upgrade would align the signature input with modern Android standards and potentially improve both UX and performance.

Code of Conduct

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