finish first iteration of new notebooks on RL [skip ci]

Author: BDonnot

.gitignore

@@ -412,7 +412,7 @@ getting_started/env_py38_grid2op110_ray110.ipynb
 getting_started/env_py38_grid2op110_ray210.ipynb
 grid2op/tests/req_chronix2grid
 grid2op/tests/venv_test_chronix2grid/
-
+getting_started/venv_310_ray/
 
 # profiling files
 **.prof

CHANGELOG.rst

@@ -45,6 +45,10 @@ Next release
 - TODO Notebook using "keras rl" (see https://keras.io/examples/rl/ppo_cartpole/)
 - TODO put the Grid2opEnvWrapper directly in grid2op as GymEnv
 - TODO example for MCTS https://github.com/bwfbowen/muax et https://github.com/google-deepmind/mctx
+- TODO jax everything that can be: create a simple env based on jax for topology manipulation, without
+  redispatching or rules
+- TODO backend in jax, maybe ?
+
 
 [1.10.3] - 2024-xx-yy
 -------------------------