tqdm: add page

[Managor]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known):

[gutjuri]

Hi, I think that the description of the example should be a bit more detailed.

[Managor]

Sure, but in what way? There are so many ways to create a progress bar when I looked at examples online. The examples were long so I thought this page could be made to start from the basics. So the user understands what is happening.