Use inclusiveNamespacesPrefixList to generate InclusiveNamespaces

[shunkica]

Currently, the inclusiveNamespacesPrefixList property on the Reference interface is only used during loading of references.
This change would allow the use of the same property during the creation of references to add a InclusiveNamespaces element.

Example:

sig.addReference(
    "//*[local-name(.)='Timestamp']",
    ["http://www.w3.org/2001/10/xml-exc-c14n#"],
    'http://www.w3.org/2000/09/xmldsig#sha1',
    '','',
    'wsse soapenc soapenv xsd xsi');

Result:

<ds:Reference URI="#TS-b3f4bfa7-fe3b-4ee1-aa8c-289ee7de442b">
  <ds:Transforms>
    <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
       <InclusiveNamespaces PrefixList="wsse soapenc soapenv xsd xsi"
          xmlns="http://www.w3.org/2001/10/xml-exc-c14n#"/>
     </ds:Transform>
   </ds:Transforms>
   <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1"/>
   <ds:DigestValue>DGrj1zr8K0OsBojzMSMVowotX60=</ds:DigestValue>
</ds:Reference>

Added inclusiveNamespacesPrefixList property to SignedXML options, which if present generates InclusiveNamespaces element inside CanonicalizationMethod.

Example:

const sig = new SignedXml(null, {idAttribute: 'Id', inclusiveNamespacesPrefixList: 'soapenc soapenv xsd xsi'});

Result:

<ds:Signature Id="SIG-0271048c-6ea7-4e9d-85e2-1819c3ce3848" xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
  <ds:SignedInfo>
    <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
      <InclusiveNamespaces PrefixList="soapenc soapenv xsd xsi"
        xmlns="http://www.w3.org/2001/10/xml-exc-c14n#"/>
      </ds:CanonicalizationMethod>

[shunkica]

This pull request closes #228, #189, #138 and #60