audit2allow: add page

[pranlawate]

Adds documentation for the audit2allow command.

Contributes to #11896

• 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): policycoreutils-python-utils-3.7-5.fc41.x86_64

[tldr-bot]

Hello! I've noticed something unusual when checking this PR at commit
ad2c8674af231c02314532e65865ffdb4f53edba:

• The page pages/linux/audit2allow.md already exists in the common directory.

Is this intended? If so, just ignore this comment. Otherwise, please double-check the commits.

[Managor]

Can you merge the page in common into this and then remove the page? We seem to have moved a Linux only command to common. #17626

[pranlawate]

I tried to incorporate from the common audit2allow page into this one and have pushed another commit

[tldr-bot]

The build for this PR failed with the following error(s) at commit
c7e0089829f5a86eca30f6b514f3495f223ea82a:

pages/linux/audit2allow.md:0: TLDR019 Page should only include a maximum of 8 examples

Please fix the error(s) and push again.

[pranlawate]

Sorry I had to force push to unstage commit of removing common/audit2why from this branch. It needs to be handled with audit2why PR.