fix: Pattern can match a Type

[pvojtechovsky]

During writing test for #2530, I tried to make Pattern which matches whole type and have found that it doesn't work.

Reason: AST of type consists of at least 2 related parameters:

1. String CtType#simpleName - in the name of the type
2. CtTypeReference qualifiedName - in each self reference to the type

Until this PR Pattern made only one parameter with type CtTypeReference. It was ok as long as Pattern is used for generating of types, because generator is able to convert CtTypeReference to String simpleName.

But when we match such Pattern, it doesn't work/matches because there is no way how to create CtTypeReference (with fully qualified name) from the simple name of the type.

This PR contains solution which introduces new internal ParameterInfo ... ComputedParameterInfo, whose value is computed from primary parameter info. The computation algorithm is defined by interface ParameterComputer. There is also first implementation of that ParameterComputer interface: SimpleNameOfTypeReferenceParameterComputer, which returns simple name of CtTypeReference and during matching ignores simple type name, so type matching works.