Add issuer name tests.

[aljones15]

Adds a test for "If present, the value of the issuer.name property MUST be a string or a language value object as described in 10.1 Language and Base Direction."

1. create an invalid "value object" with an extra prop like "url"
2. create a value object array with multiple languages
3. add a test with @direction

[BigBlueHat]

@aljones15 good start. I think key to these specific tests will be negative versions. The "value object" for example, MUST NOT have any additional properties. So the following would be an invalid value for name:

{
      "@value":"ExampleIssuer",
      "@language": "en",
      "url": "http://example.com/issuer" 
    }

And arrays of value objects are also valid--to support multiple languages.

We should also get an @direction example tested in their also.

[BigBlueHat]

Excellent. Thank you!

[JSAssassin]

Also need to add a changelog entry for the test like in the other PR.