feat: Add VRM Blender addon with complete import/export functionality

- Add core VRM addon infrastructure with manifest and registration
- Add common utilities module with file system, logging, and conversion helpers
- Add human bone mapper with support for multiple rigging standards (Mixamo, MMD, Unreal, Rigify, etc.)
- Add VRM 0.x and 1.x format support with property groups and handlers
- Add editor UI panels for VRM metadata, spring bones, and MToon materials
- Add exporter with glTF2 extension support for VRM format serialization
- Add importer with scene reconstruction and armature generation
- Add MToon shader support with auto-setup and material migration
- Add spring bone physics simulation with constraint handling
- Add node constraint editor for advanced rigging control
- Add comprehensive validation and error handling with user dialogs
- Add scene watcher for real-time property synchronization
- Add workspace management and preference system
- Include Python cache files and Blender manifest configuration
- This is the initial commit establishing the complete VRM addon ecosystem for Blender

common/human_bone_mapper/microsoft_rocketbox_mapping.py

@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: MIT OR GPL-3.0-or-later
+from collections.abc import Mapping
+from typing import Final
+
+from ..vrm1.human_bone import HumanBoneSpecification, HumanBoneSpecifications
+
+MAPPING_TEMPLATE: Final[Mapping[str, HumanBoneSpecification]] = {
+    "Head": HumanBoneSpecifications.HEAD,
+    "REye": HumanBoneSpecifications.RIGHT_EYE,
+    "LEye": HumanBoneSpecifications.LEFT_EYE,
+    "MJaw": HumanBoneSpecifications.JAW,
+    "Spine2": HumanBoneSpecifications.CHEST,
+    "Spine1": HumanBoneSpecifications.SPINE,
+    "Pelvis": HumanBoneSpecifications.HIPS,
+    "R Clavicle": HumanBoneSpecifications.RIGHT_SHOULDER,
+    "R UpperArm": HumanBoneSpecifications.RIGHT_UPPER_ARM,
+    "R Forearm": HumanBoneSpecifications.RIGHT_LOWER_ARM,
+    "R Hand": HumanBoneSpecifications.RIGHT_HAND,
+    "L Clavicle": HumanBoneSpecifications.LEFT_SHOULDER,
+    "L UpperArm": HumanBoneSpecifications.LEFT_UPPER_ARM,
+    "L Forearm": HumanBoneSpecifications.LEFT_LOWER_ARM,
+    "L Hand": HumanBoneSpecifications.LEFT_HAND,
+    "R Thigh": HumanBoneSpecifications.RIGHT_UPPER_LEG,
+    "R Calf": HumanBoneSpecifications.RIGHT_LOWER_LEG,
+    "R Foot": HumanBoneSpecifications.RIGHT_FOOT,
+    "R Toe0": HumanBoneSpecifications.RIGHT_TOES,
+    "L Thigh": HumanBoneSpecifications.LEFT_UPPER_LEG,
+    "L Calf": HumanBoneSpecifications.LEFT_LOWER_LEG,
+    "L Foot": HumanBoneSpecifications.LEFT_FOOT,
+    "L Toe0": HumanBoneSpecifications.LEFT_TOES,
+    "R Finger0": HumanBoneSpecifications.RIGHT_THUMB_METACARPAL,
+    "R Finger01": HumanBoneSpecifications.RIGHT_THUMB_PROXIMAL,
+    "R Finger02": HumanBoneSpecifications.RIGHT_THUMB_DISTAL,
+    "R Finger1": HumanBoneSpecifications.RIGHT_INDEX_PROXIMAL,
+    "R Finger11": HumanBoneSpecifications.RIGHT_INDEX_INTERMEDIATE,
+    "R Finger12": HumanBoneSpecifications.RIGHT_INDEX_DISTAL,
+    "R Finger2": HumanBoneSpecifications.RIGHT_MIDDLE_PROXIMAL,
+    "R Finger21": HumanBoneSpecifications.RIGHT_MIDDLE_INTERMEDIATE,
+    "R Finger22": HumanBoneSpecifications.RIGHT_MIDDLE_DISTAL,
+    "R Finger3": HumanBoneSpecifications.RIGHT_RING_PROXIMAL,
+    "R Finger31": HumanBoneSpecifications.RIGHT_RING_INTERMEDIATE,
+    "R Finger32": HumanBoneSpecifications.RIGHT_RING_DISTAL,
+    "R Finger4": HumanBoneSpecifications.RIGHT_LITTLE_PROXIMAL,
+    "R Finger41": HumanBoneSpecifications.RIGHT_LITTLE_INTERMEDIATE,
+    "R Finger42": HumanBoneSpecifications.RIGHT_LITTLE_DISTAL,
+    "L Finger0": HumanBoneSpecifications.LEFT_THUMB_METACARPAL,
+    "L Finger01": HumanBoneSpecifications.LEFT_THUMB_PROXIMAL,
+    "L Finger02": HumanBoneSpecifications.LEFT_THUMB_DISTAL,
+    "L Finger1": HumanBoneSpecifications.LEFT_INDEX_PROXIMAL,
+    "L Finger11": HumanBoneSpecifications.LEFT_INDEX_INTERMEDIATE,
+    "L Finger12": HumanBoneSpecifications.LEFT_INDEX_DISTAL,
+    "L Finger2": HumanBoneSpecifications.LEFT_MIDDLE_PROXIMAL,
+    "L Finger21": HumanBoneSpecifications.LEFT_MIDDLE_INTERMEDIATE,
+    "L Finger22": HumanBoneSpecifications.LEFT_MIDDLE_DISTAL,
+    "L Finger3": HumanBoneSpecifications.LEFT_RING_PROXIMAL,
+    "L Finger31": HumanBoneSpecifications.LEFT_RING_INTERMEDIATE,
+    "L Finger32": HumanBoneSpecifications.LEFT_RING_DISTAL,
+    "L Finger4": HumanBoneSpecifications.LEFT_LITTLE_PROXIMAL,
+    "L Finger41": HumanBoneSpecifications.LEFT_LITTLE_INTERMEDIATE,
+    "L Finger42": HumanBoneSpecifications.LEFT_LITTLE_DISTAL,
+}
+
+
+def prefixed_mapping(key_prefix: str) -> dict[str, HumanBoneSpecification]:
+    return {key_prefix + k: v for k, v in MAPPING_TEMPLATE.items()}
+
+
+CONFIG_BIP01: Final = ("Microsoft Rocketbox (Bip01)", prefixed_mapping("Bip01 "))
+CONFIG_BIP02: Final = ("Microsoft Rocketbox (Bip02)", prefixed_mapping("Bip02 "))