Update APIView token TypeSpec to generate valid JSON schema with top…

[praveenkuttappan]

TypeSpec decorator changes and removed bundleId to generate single JSON schema with valid top level properties.

[JonathanGiles]

I changed the URL in my parser validation code to point to the URL in this PR, and without changing any of my JSON (so it is very invalid), I got the following output:

Validation failed. Errors:
$.Language: must be the constant value 'C'
$.Language: must be the constant value 'C++'
$.Language: must be the constant value 'C#'
$.Language: must be the constant value 'Go'
$.Language: must be the constant value 'Java'
$.Language: must be the constant value 'JavaScript'
$.Language: must be the constant value 'Kotlin'
$.Language: must be the constant value 'Python'
$.Language: must be the constant value 'Swagger'
$.Language: must be the constant value 'Swift'
$.Language: must be the constant value 'TypeSpec'
$.LanguageVariant: must be the constant value 'None'
$.LanguageVariant: must be the constant value 'Spring'
$.LanguageVariant: must be the constant value 'Android'
$.Diagnostics[58]: required property 'TargetId' not found
$.Diagnostics[59]: required property 'TargetId' not found
$: required property 'ParserVersion' not found
$: required property 'ReviewLines' not found

So, I would say that this PR at the very least takes things in the right direction.