nk3 set-config: Add support for opcard.use_se050_backend

[robin-nitrokey]

This patch refactors the set-config command:

1. It checks whether the config option is supported by the device using the GET_CONFIG command before any other steps are performed.
2. For known keys that trigger a reset, currently only opcard.use_se050_backend, a warning and a confirmation prompt are shown.
3. Unknown keys are rejected unless --force is set, trigger a warning and require a confirmation prompt.
4. It adds a --dry-run option to check the infos and prompts that are printed for a config change.
5. It adds an automatic reboot if required.

Potential improvements:

• The metadata for config values should be put into data structures that can also be used by nitrokey-app2.
• Information on whether a command triggers a reset and requires touch confirmation could be queried from the device using a new command.
• We could validate the configuration values before sending them to the device.
• We could compare the current and the new value to detect no-op calls before printing the sermon about side effects.

[daringer]

lgtm! tested on v1.6-test-20231218 with nk3am:

• setting opcard.use_se050_backend
• getting opcard.use_se050_backend
• getting fido.disable_skip_up_timeout
• --dry-run