Add missing margin/padding properties

[eritbh]

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions

Description of the Change

Adds the following properties to the property list:

• margin-block
• margin-inline
• padding-block
• padding-inline

The corresponding (margin|padding)-(block|inline)-* properties are already present; these properties are shorthands for them.

Alternate Designs

N/A

Benefits

Correct highlighting behavior in VS Code

Possible Drawbacks

I have no idea how this section should be formatted. I've opted to just modify the lines required to minimize churn, but can reformat the section if necessary.

Applicable Issues

None

[darangi]

Thanks for the contribution @eritbh 🙇🏾