Add history into main window

[danirabbit]

Problem

Resizing the calculator window vertically isn't currently possible and has no real benefit. If we want calculator to be able to be tiled or work on mobile, it needs to be resizable

Proposal

Put the history in the main window as in GNOME calculator. This would give value to the vertical space and keep buttons from resizing in weird ways

Prior Art (Optional)

[DSLitvinov]

The current immutability of the size of the calculator is puzzling after switching from other operating systems. And it's cool that you want to make its dimensions changeable, but I'm confused by the proximity of the cancel button to the window close button, I'll have to be very careful. Maybe in elementary, move it to the right side?