Support biometric in Capacitor SDK

[louischan-oursky]

ref #256

[tung2744]

@louischan-oursky Have you got this error when trying in simulator?

[louischan-oursky]

No. I tested on my own iPhone. Maybe simulator does not support secure enclave.

[louischan-oursky]

Let me take a look later when I have time.

[tung2744]

Maybe simulator does not support secure enclave.

However, app2app can be run on simulator, which is also using secure enclave.

BTW, I also added a readme for capacitor example app in c23f468

[louischan-oursky]

I figure out the cause, but I could not find any reason on the web.

In the SecAccessControlCreateFlags, if we omit .biometryAny .biometryCurrentSet .userPresence , then we can enable biometric on Simulator. I think the simulator has some problem handling these flags.

[louischan-oursky]

Added one commit to work around the issue.