Create experiments for PSLab

[cweitat]

Create experiments with both templates. Upload the markdown file to contribute > basic and document to the drive folder.

Document template:
https://docs.google.com/document/u/2/d/12j-x0wHo8NAgUhPHTrRjSSmoA88UM7YV_nJWK0YCUYs/edit?usp=drive_web&ouid=107042118272138061125

Markdown template:
https://github.com/fossasia/pslab-experiments/blob/master/contribute/experiment-template.md

Video template:
https://docs.google.com/document/d/1gG1CJMbJZ03LipAK2mYFODapxDzID1M4EGlsQMEH9Zw/edit