pkgz: add the info option

[roguehashrate]

Added information about enabled sources for package search.

Checklist

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• 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 contains at most 5 new pages.
• The PR is authored by me, or has been human-reviewed if it was created with AI or machine translation software.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known): 0.1.8
• Reference issue: #

[tldr-bot]

The build for this PR failed with the following error(s) at commit
9553ef3607315f9f46e095130d40fbf01b457470:

pages/common/pkgz.md:18: TLDR104 Example descriptions should prefer infinitive tense (e.g. write) over present (e.g. writes) or gerund (e.g. writing)

Please fix the error(s) and push again.

[sebastiaanspeck]

Suggested change

	- Shows enabled sources with the package available and/or installed:
	- Show enabled sources with the package available and/or installed: