Add help tips metadata

[#54519202]
Validate help tips, implement help system skeleton and use it

[#54519202]
Add help system icon in the top-left corner

[#54519202]
Automatically wrap markdown content in div.markdown-typography

[#54519202]
Implement Lab help system

[#54519202]
Update "Tooltips" interactive so now it presents helptips too

[#54519202]