Remove asn1crypto

[sosthene-nitrokey]

removes the dependency on asn1crypto, replacing it with the cryptography package and a custom builder

Motivation

This is one less dependency. asn1crypto is not very widespread so using cryptography is likely the better solution.

Checklist

Make sure to run make check and make fix before creating a PR, otherwise the CI will fail.

• tested with Python3.9
• signed commits
• updated documentation (e.g. parameter description, inline doc, docs.nitrokey)
• added labels

Test Environment and Execution

• OS: Arch Linux
• device's model: NK3AM
• device's firmware version: 1.7.0-test20241022

Relevant Output Example

Fixes #

[robin-nitrokey]

I would use # type: ignore[<code>] to only ignore the problematic lints, otherwise LGTM.

[sosthene-nitrokey]

Ok, it was failing because of a missing @property.