Add optional support 3DES and RC2 about webcrypto-liner

[mohitgoyal2011]

Hi, sorry if this is not the right place to ask. How exactly do you go about using webcrypto-liner with PKIjs ? I am trying to get a PFX generated and working on Windows. And realize that we would need to webcrypto-liner.

`import * as webcryptoliner from 'webcrypto-liner/build'

pkijs.setEngine("webcrypto", new webcryptoliner.Crypto())
//Create a PKCS12
await pkcs12.parsedValue.authenticatedSafe.makeInternalValues(
{
safeContents: [
{
password: pvtsutils.Convert.FromString("password"),
contentEncryptionAlgorithm: {
name: "DES-CBC",
length: 128
},
hmacHashAlgorithm: "SHA-1",
iterationCount: 2048
}
]
}
);`

However, this complains with "DES-CBC" not found. I thought the polyfill would cause this algorithm name to be recognized atleast and then I could deal with the other errors like key length. Any pointers on how to use this would be helpful

[mohitgoyal2011]

Actually, looking at other comments, I realized I would have to use webcrypto-liner in the node specific example to make this work. If you have any implementations that work and can be shared, I would be grateful.