Generate CallMatcher from method signature

[picimako]

Tasks

• Implement an intention action that would generate a CallMatcher instantiation code from a method's signature.
• When invoked on a method name in a signature, it would generate something like this, based on whether the method is a static/instance method, the parameter names and counts:

CallMatcher.instanceCall(<container class name>, <instance method name>);
//or
CallMatcher.staticCall(<container class name>, <static method name>).parameterCount(<count>);
//and so on...

• If the method is an instance method, then it may provide two options whether to generate instanceCall or exactInstanceCall.
• The intention action would copy the generated code to the OS clipboard.

[picimako]

Completed.