ENH: make the Matrix class JSON serializable

rocketpy/mathutils/vector_matrix.py

@@ -1002,6 +1002,10 @@ def __repr__(self):
  + f" [{self.zx}, {self.zy}, {self.zz}])"
  )
 
+ def to_dict(self):
+ """Returns the matrix as a JSON compatible element."""
+ return [list(row) for row in self.components]
+
  @staticmethod
  def identity():
  """Returns the 3x3 identity matrix."""