Gazemapper

- Added support for Viewpointsystem VPS 19
- fixing further regressions due to introduction of generic eye tracker, and upgrade to imgui_bundle 1.6.2
- fixed bug stopping import of multiple recordings from the same source directory

Fix regression with importing anything other than generic eye tracker

- added support for a generic eye tracker type, allowing users to import data from any eye tracker into tools using glassesTools as long as they handle conversion to the glassesTools data format themselves. For generic eye trackers, can set the name to display in the recording info.
- added associated new `import_known_custom_eye_trackers` option
- corrected issue where crashed import action status was never updated if folder for imported recording was not created.

- Bumped glassesTools, which pulls in a new version of imgui_bundle
- Adjusted GUI code for this new version, where needed
- Minimum Python version is now 3.11 due to imgui_bundle

- gazeMapper now works correctly when camera calibration is not available for one or all recordings in a session
- updated references in readme and GUI
- small crashing and readme fixes

first complete release