Update: component vertical alignment property (fixes #353)

[guywillis]

Fixes: #353

Update

• Consolidates the vertical alignment of components within a block into a json property that applies alignment classes on the block depending on property value

[kirsty-hames]

Config looks good thanks @guywillis but I'm not sure the class styles need moving from theme-extras.less to block.less. I think the current setup of having a file containing all the extra optional styles is an intuitive place to look and making the class a config setting doesn't change that this is still an optional style.
Although this PR only relates to the vertical alignment property, if more classes are to become config options to improve usability in the AAT then it could get messy scattering classes across core/plugin less files? Happy to discuss or be told otherwise.

[kirsty-hames]

Config looks good thanks @guywillis but I'm not sure the class styles need moving from theme-extras.less to block.less. I think the current setup of having a file containing all the extra optional styles is an intuitive place to look and making the class a config setting doesn't change that this is still an optional style. Although this PR only relates to the vertical alignment property, if more classes are to become config options to improve usability in the AAT then it could get messy scattering classes across core/plugin less files? Happy to discuss or be told otherwise.

After discussion, seeing as this class is exclusive to block model only, it makes sense this is contained to block.less.

[github-actions]

🎉 This PR is included in version 7.1.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀