Mocap Tool: HumanIK mapper tool

[miquelcampos]

• [x] Import/Export in json format with .hikm
• [x] compatible with custom steps
• [x] mapping visualization in a table
• [x] use table for IK relative Mapping
• [x] fix: mirror mapping only map in Left side
• [x] fix: unlock with mirror
• [x] initialization check to avoid errors