Release v0.8.2

• [FIXED] CI was broken after migration to artifact v4, set it back to v3
  (and make the names of the folder clearer)
• [FIXED] CI when using latest pandapower version (2.14) which broke some previous tests
• [ADDED] the computation of the LODF (line outage distribution factor) in
  lightsim2grid
• [ADDED] some convenience functions to retrieve in a vectorized way the
  buses to which each elements of a given container is connected
  (eg gridmodel.get_lines().get_bus_from())
• [ADDED] more binaries (windows arm64 and macos arm64)
• [IMPROVED] remove some compilation warnings for clang
• [IMPROVED] possibility to specify generator used as slack by its name when initializing
  from pypowsybl.
• [IMPROVED] removing some warnings when grid2op is not installed
  (it should not raise any warning as lightsim2grid does not require grid2op)