docs: Add JOSS publication badge

Author: MathisFederico

README.md

@@ -3,8 +3,11 @@
 [![Fury - PyPi stable version](https://badge.fury.io/py/hcraft.svg)](https://badge.fury.io/py/hcraft)
 [![PePy - Downloads](https://static.pepy.tech/badge/hcraft)](https://pepy.tech/project/hcraft)
 [![PePy - Downloads per week](https://static.pepy.tech/badge/hcraft/week)](https://pepy.tech/project/hcraft)
+
+[![DOI](https://joss.theoj.org/papers/10.21105/joss.06468/status.svg)](https://doi.org/10.21105/joss.06468)
 [![Licence - GPLv3](https://img.shields.io/github/license/IRLL/HierarchyCraft?style=plastic)](https://www.gnu.org/licenses/)
 
+
 [![Codacy - grade](https://app.codacy.com/project/badge/Grade/b5010ccc46274c0eb1e3ae563934efdd)](https://www.codacy.com/gh/IRLL/HierarchyCraft/dashboard?utm_source=github.com&utm_medium=referral&utm_content=IRLL/HierarchyCraft&utm_campaign=Badge_Grade)
 [![Codacy - coverage](https://app.codacy.com/project/badge/Coverage/b5010ccc46274c0eb1e3ae563934efdd)](https://www.codacy.com/gh/IRLL/HierarchyCraft/dashboard?utm_source=github.com&utm_medium=referral&utm_content=IRLL/HierarchyCraft&utm_campaign=Badge_Coverage)
 [![CodeStyle - Black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)

tests/solving_behaviors/test_mineHcraft.py

@@ -1,3 +1,5 @@
+from pathlib import Path
+
 from matplotlib import pyplot as plt
 from hcraft.examples.minecraft.env import MineHcraftEnv
 from hcraft.task import Task
@@ -17,7 +19,7 @@
 @pytest.mark.slow
 def test_solving_behaviors():
     """All tasks should be solved by their solving behavior."""
-    draw_call_graph = False
+    draw_call_graph = True
 
     if draw_call_graph:
         _fig, ax = plt.subplots()
@@ -29,7 +31,10 @@ def test_solving_behaviors():
     task = [t for t in tasks_left if t.name == "Place enchanting_table anywhere"][0]
     solving_behavior = env.solving_behavior(task)
     easy_tasks_left = [task]
+    call_path = Path("call_graph")
+    step = 0
     while not done and not env.purpose.terminated:
+        step += 1
         tasks_left = [t for t in tasks_left if not t.terminated]
         if task is None:
             easy_tasks_left = [t for t in tasks_left if t.name not in HARD_TASKS]
@@ -44,6 +49,7 @@ def test_solving_behaviors():
             plt.cla()
             solving_behavior.graph.call_graph.draw(ax)
             plt.show(block=False)
+            plt.savefig(call_path / f"{step}.png", figsize=(16, 9))
         observation, _reward, terminated, truncated, _info = env.step(action)
         done = terminated or truncated
         if task.terminated: