npm-pkg: add page

[Sreyasiv]

• The page is in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page description have links to documentation or a homepage.
• The page( follow the content guidelines.
• The page follow the style guide.
• The PR contains at most 5 new pages.
• The PR title conforms to the recommended templates.

Command version: npm v9+

Reference: #14000

[tldr-bot]

The build for this PR failed with the following error(s) at commit
4e0d62cb8141435767d4f4afb67f7bbe2150c42b:

pages/common/npm-pkg.md:3: TLDR014 Page should contain no trailing whitespace

Please fix the error(s) and push again.

[Managor]

Can you please not add AI summaries to the opening post. They just waste time without contributing anything.