Support webauthn (#17957)

Migrate from U2F to Webauthn

Co-authored-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>

vendor/github.com/cloudflare/cfssl/errors/doc.go

@@ -0,0 +1,46 @@
+/*
+Package errors provides error types returned in CF SSL.
+
+1. Type Error is intended for errors produced by CF SSL packages.
+It formats to a json object that consists of an error message and a 4-digit code for error reasoning.
+
+Example: {"code":1002, "message": "Failed to decode certificate"}
+
+The index of codes are listed below:
+	1XXX: CertificateError
+	    1000: Unknown
+	    1001: ReadFailed
+	    1002: DecodeFailed
+	    1003: ParseFailed
+	    1100: SelfSigned
+	    12XX: VerifyFailed
+	        121X: CertificateInvalid
+	            1210: NotAuthorizedToSign
+	            1211: Expired
+	            1212: CANotAuthorizedForThisName
+	            1213: TooManyIntermediates
+	            1214: IncompatibleUsage
+	        1220: UnknownAuthority
+	2XXX: PrivatekeyError
+	    2000: Unknown
+	    2001: ReadFailed
+	    2002: DecodeFailed
+	    2003: ParseFailed
+	    2100: Encrypted
+	    2200: NotRSA
+	    2300: KeyMismatch
+	    2400: GenerationFailed
+	    2500: Unavailable
+	3XXX: IntermediatesError
+	4XXX: RootError
+	5XXX: PolicyError
+	    5100: NoKeyUsages
+	    5200: InvalidPolicy
+	    5300: InvalidRequest
+	    5400: UnknownProfile
+	    6XXX: DialError
+
+2. Type HttpError is intended for CF SSL API to consume. It contains a HTTP status code that will be read and returned
+by the API server.
+*/
+package errors