Warn when calling `Phockito::verify($obj)->staticMethodName()`

[TysonAndre]

This will always have 0 calls on the instance if the method is a static method, in the generated code.

Use Phockito::when($obj->staticMethodName()) to create a mock (with the call inside when(....))

PHP allows calling static methods on the instance.

Phockito::when($obj->staticMethodName())... is mocking the static method instead and calls will be recorded as 'instance' => "::$className"

__phockito_setMethod should check if the method of the class is static (cache the result)

And the verification should perform the same check