* feat: 🎸 Configuration so viewer tools can nix handles
Adds a key to cornerstone configuration that allows to toggle on/off
handle rendering
Closes: #1223
* Update extension docs
* Update doc
* docs: include hideHandles configuration in our configuration docs
* chore: default to hiding handles for annotations
* chore: switch to drawHandlesOnHover to mimic legacy viewer functionality
* Flip logic for drawHandlesOnHover; reverse of hideHandles
* Don't hide the handles of ellipse or rectangle roi
* invert check
Co-authored-by: Danny Brown <danny.ri.brown@gmail.com>
