Supported marker augmentation and inverse kinematics + others

• Depth values in trc files adjusted based on neutral position for the sagittal plane (left and right side) and frontal plane (front and back side)
• Supported marker augmentation and inverse kinematics via Pose2Sim
• c3d export
• renamed a bunch of parameters
• fixed whole_body_wrist model
• Fixed "load_trc" option
• Updated doc

What's Changed

• Supported marker augmentation and inverse kinematics + others by @davidpagnon in #22

Full Changelog: v0.6.3...v0.7.0