Draft: Add support for new streamlit mesh viewer

Added

• Replaced used of stpyvista lib to display mesh in streamlit to streamlit-pyvista

Changed

• Removed the slider created in streamlit since it's now part of the frontend
• in PyvistaPlotter changed the show method to use the component from the new library and removed all unnecessary code related to previous implementation

Other minor change

• Added some utils for the mesh path formatting
• Added a method get_or_else in the DataContainer class
• Added "*env" in the default ignore.yaml to avoid scanning python venv