Feature request: Unify all open_...() method into open()

[bleudev]

Please Describe The Problem To Be Solved

Feodor said in review of my pull (#3172) that it'll be great if will there is open() method. I'm requesting to add this in my future pull and requesting realisation. f. e.

page.open('drawer')
# or
drawer = ...
page.open('drawer', drawer)

Also it'll great that will there is close() method

page.close('drawer')

[ndonkoHenri]

if drawer isn't in page it will be appended to this page

What do you mean?

[bleudev]

if drawer isn't in page it will be appended to this page

What do you mean?

if drawer isn't in page -> page.drawer = drawer

Actually when it's in page ->
page.drawer = drawer

Then we can just add page.drawer = drawer in all ways.