feat(#344): Identify Problem With INVOKESPECIAL Instruction

[volodya-lombrozo]

In this PR I identified problem related to INVOKESPECIAL instruction decompilation.
I added one more integration test to reveal the problem and added one more puzzle to solve the problem in the future.

Related to #344.

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PR-Codex overview

This PR adds a new Playground class, tests it, and refactors the InvokespecialHandler class.

Detailed summary

• Added Playground class with isAvailable method
• Added test for Playground class in Main.java
• Refactored InvokespecialHandler class in handlers package

The following files were skipped due to too many changes: src/test/resources/xmir/disassembled/WebProperties$Resources$Chain$Strategy$Content.xmir

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[volodya-lombrozo]

@rultor merge

[rultor]

@rultor merge

@volodya-lombrozo OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@volodya-lombrozo Done! FYI, the full log is here (took me 8min)

[0crat]

@volodya-lombrozo Thanks for the contribution! You've earned +5 points for this: +30 as a basis; -7 for too many hits-of-code (251 >= 100); -15 for the lack of code review; -10 for too few (2) comments; +7 to give you at least something. Please, keep them coming. Your running balance is +274.