fix: update exposed packages

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "darli"
 description = "The DARLi is a Python 3 library that supports both numerical and symbolical computations of open loop articulated robots provided urdf file."
-version = "0.2.1"
+version = "0.2.2"
 authors = [{ name = "Lev Kozlov" }, { name = "Simeon Nedelchev" }]
 dependencies = ["cmeel_casadi_kin_dyn==1.6.6"]
 readme = "README.md"
@@ -20,4 +20,12 @@ requires = ["setuptools>=43.0.0", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools]
-packages = ["darli", "darli.backend", "darli.modeling"]
+packages = [
+    "darli",
+    "darli.backend",
+    "darli.arrays",
+    "darli.modeling",
+    "darli.modeling.functional",
+    "darli.modeling.state_space",
+    "darli.modeling.parametric",
+]