certificate-1.3.9: Certificates and Key Reader/Writer

# certificate-1.3.9: Certificates and Key Reader/Writer

Certificates and Key reader/writer

At the moment only X509 certificate and unencrypted private key are supported, but will include PGP certificate and pkcs8 private keys

Modules

- Data
  - Certificate
    - Data.Certificate.KeyDSA
    - Data.Certificate.KeyRSA
    - Data.Certificate.X509
      - Data.Certificate.X509.Cert
      - Data.Certificate.X509.Ext
  - Data.CertificateStore
- System
  - Certificate
    - System.Certificate.X509
      - System.Certificate.X509.MacOS
      - System.Certificate.X509.Unix