Fix 3rd person camera controls

[da1nerd]

There is some slight jarring when the angle is at +/-117 degrees.
See this line https://github.com/neutrinog/prism/blob/efbb22674d666f2dc16c2bf61a39fcb4be5376c5/src/prism/stdlib/third_person_camera_controls.cr#L48

[da1nerd]

there seems to be a bit of a wobble when you rotate the camera around the entity. This is likely the cause of the jarring.