Avoid freeze while running

[shyamamrith]

The entire QGIS session currently freezes while the simulations are running.

As an initial improvement, could design a pop-up which appears when the plugin is running to notify the user and instruct them to not click on anything. Also, another possible workaround is to call separate functions/scripts which could allow prints to work. Also try print flush.

This is likely to be a better solution: https://docs.qgis.org/3.28/en/docs/pyqgis_developer_cookbook/tasks.html
Progress bar: https://docs.qgis.org/3.28/en/docs/pyqgis_developer_cookbook/communicating.html#showing-progress