* remove title bar on windows windows
* re-integrate native controls into our tab bar
* remove menu completely (weird "Alt" activation)
* actually fix Ctrl-V in terminal
* clamp zoom levels better (0.4 - 2.6)
* simplify macos / windows drag regions (keep responsive to zoom)
* fix settings schemas for windows
Adds schema.json support to the settings file to provide type hints and
other eventual details. This also adds a system to easily add more
schema files for other type of configurations.
