Skamaev

configure Signer initialization for Gost2012 algorithms

2

Hi, faced some issue with Gost-2012 signature verification. For example for such signature: [signature_with_file.zip](https://github.com/bcgit/bc-csharp/files/3845325/signature_with_file.zip) If I call `SignerInformation.Verify(signerCert)` it throws [SecurityUtilityException ](https://github.com/bcgit/bc-csharp/blob/f18a2dbbc2c1b4277e24a2e51f09cac02eedf1f5/crypto/src/security/SignerUtilities.cs#L563) "1.2.643.7.1.1.2.2WITH1.2.643.7.1.1.1.1 not recognised" Bouncy castle doesn't know anything...