jupyter-lab: add page

[rajeshkanaka]

• Introduced a new markdown file for JupyterLab.
• Included basic usage instructions, commands for opening notebooks, creating new notebooks, running cells, and restarting the kernel.
• Added a link for more information to the official JupyterLab documentation.

• 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):

[CLAassistant]

All committers have signed the CLA.

[tldr-bot]

The build for this PR failed with the following error(s):

pages/common/jupyterlab.md:
Error: Parse error on line 8:
... usage:**```bash`jupyter lab````**
--------------------^
Expecting 'NEWLINE', 'TEXT', 'DASH', 'BACKTICK', got 'COMMAND_TEXT'
pages/common/jupyterlab.md:5: TLDR102 Example description probably not properly annotated
pages/common/jupyterlab.md:6: TLDR110 Command example should not be empty
pages/common/jupyterlab.md:6: TLDR103 Command example is missing its closing backtick
pages/common/jupyterlab.md:7: TLDR103 Command example is missing its closing backtick

Please fix the error(s) and push again.

[spageektti]

Hi. Thanks for your contribution!