Add Pose classification

[Soumi7]

Added pose classification to recognize four yoga pose classes :

• mountain pose
• downward dog pose
• cobra pose
• triangle1 pose (trikonasana)

Try it with :

python3 BlazeposeDepthai.py --pose

[geaxgx]

Thank you for your great contribution @Soumi7 ! Actually I have planned to reorganize this repo soon. I want to organize it like this repo: https://github.com/geaxgx/depthai_movenet where the examples are separated from the core function. When it will be done, maybe you could propose a new PR adapted to this new organisation, where your code would be a dedicated example ? Thoughts ?

[Soumi7]

Sounds good!

[Soumi7]

Closing this PR here