Customisable move/resize window mouse buttons

[Sidd-Dino]

Addressing the issue #189.

Two new options added to berry and berryc

berryc move_button 1-5
berryc resize_button 1-5

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Buttons Tested

1 - Left Mouse Button
2 - Scroll Button (Press Down on Scroll Wheel)
3 - Right Mouse Button

[Sidd-Dino]

The modifications I've added also allows me to address the issue #117 . I haven't fixed it yet but I can if you wish @JLErvin

[Sidd-Dino]

I've made the changes mentioned. Is there anything else I need to do?