Replace Makefile with Python script (#5)

* REFACTOR: organize data directory to use Isaac Lab directory structure

* REFACTOR: replace Makefile with Python scripts

* UPDATE: package version

Author: T-K-233

.flake8

@@ -0,0 +1,2 @@
+[flake8]
+max-line-length=120

.gitignore

@@ -7,15 +7,9 @@
 **/*.pb
 
 # Onshape-to-robot
-ros2/build/
-ros2/install/
-ros2/log/
-data/mjcf/assets/*
-!data/mjcf/assets/merged
-data/urdf/assets/*
-!data/urdf/assets/merged
+**/assets/*
 
 # Omniverse USD
-data/usd/Props/
-data/usd/.asset_hash
-data/usd/config.yaml
+**/usd/Props/
+**/usd/.asset_hash
+**/usd/config.yaml

Makefile

@@ -40,7 +40,7 @@
 
 HUMANOID_LITE_BIPED_CFG = ArticulationCfg(
     spawn=sim_utils.UsdFileCfg(
-        usd_path=f"{ISAACLAB_ASSET_DIR}/usd/berkeley_humanoid_lite_biped.usd",
+        usd_path=f"{ISAACLAB_ASSET_DIR}/robots/berkeley_humanoid/berkeley_humanoid_lite/usd/berkeley_humanoid_lite_biped.usd",
         activate_contact_sensors=True,
         rigid_props=sim_utils.RigidBodyPropertiesCfg(
             disable_gravity=False,
@@ -105,7 +105,7 @@
 
 HUMANOID_LITE_CFG = ArticulationCfg(
     spawn=sim_utils.UsdFileCfg(
-        usd_path=f"{ISAACLAB_ASSET_DIR}/usd/berkeley_humanoid_lite.usd",
+        usd_path=f"{ISAACLAB_ASSET_DIR}/robots/berkeley_humanoid/berkeley_humanoid_lite/usd/berkeley_humanoid_lite.usd",
         activate_contact_sensors=True,
         rigid_props=sim_utils.RigidBodyPropertiesCfg(
             disable_gravity=False,