Allow makeCredential without PIN

[robin-nitrokey]

Since FIDO2.1, it should be possible to create non-discoverable credentials over CTAP2 without PIN if a PIN is set. We should also set the makeCredUvNotRqd option. More information:

• Set makeCredUvNotRqd to true in options #17
• Revert "Set makeCredUvNotRqd in CTAP options" #33.

[robin-nitrokey]

Spec:

• § 6.1.2. authenticatorMakeCredential Algorithm: Step 6
• § 6.4. authenticatorGetInfo (0x04): makeCredUvNotRqd

Test procedure:

1. Install pynitrokey with this change: fido2 make-credential: Clenaup and add rk and uv options pynitrokey#464
2. Run nitropy fido2 make-credential --resident-key discouraged --user-verification discouraged. Observe that the credential is created without user verification (i. e. entering a PIN).
3. Set a FIDO2 PIN, e. g. with nitropy fido2 set-pin or using chrome://settings/securityKeys.
4. Repeat the command from step 2. We would expect that we still don’t have to enter a PIN, but currently, we are prompted for the PIN. (Creating a resident key should still require a PIN though.)