setopt: add page

[gsspdev]

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):
• Reference issue: #

[tldr-bot]

The build for this PR failed with the following error(s) at commit
c99cd2f73fe26281617162447c36ff9dde6f190d:

pages/common/setopt.md:
Error: Parse error on line 12:
...- Set an option:'setopt {{option}}'
-------------------^
Expecting 'BACKTICK', got 'TEXT'

Please fix the error(s) and push again.

[msaf9]

Please resolve the build failure so that we can begin the actual review process.

[msaf9]

Suggested change

	'setopt {{option}}'
	`setopt {{option}}`

Please fix the build.

[msaf9]

Suggested change

	'unsetopt {{option}}'
	`unsetopt {{option}}`

+1

[msaf9]

Suggested change

	'set -o'
	`set -o`

+2

[acuteenvy]

#18560

Suggested change

	> Set/unset Z shell (zsh) options.
	> Set/unset Z shell (Zsh) options.