- Changes all references of `VIEWPORT_FLAG_INVISIBLE_PEEPS` to `VIEWPORT_FLAG_INVISIBLE_GUESTS` and `VIEWPORT_FLAG_INVISIBLE_STAFF`
- Updates Invisible People menu item and shortcut.
- Added new viewport flags into the `viewport_set_visibility` function
- Invisible options only work if see-through is activated as well
- Added see-through supports
- Regression: Exclude ride from invisible no longer works (ride is still see-through)
2e93e42a71