Feature request: RSA extract params from Public key

[sichej]

Is your feature request related to a problem? Please describe.
I need to extract modules and exponent from Public key RSA

Describe the solution you'd like
From string/file to module and exponent

Describe alternatives you've considered
using OpenSSL, but is easier for everybody here.

[cplussharp]

You can use [PEM_to_Hex] + [Parse_ASN.1_hex_string]

Or if it gets merged sometimes the conversion from PEM to JSON Web Key (see #1794 )

[a3957273]

Closed by #1277, which returns a list of parameters from within a public key.