Implement border-* CSS properties

[kasperisager]

Shorthands:

• border
• border-block
• border-block-color
• border-block-end
• border-block-start
• border-block-style
• border-block-width
• border-bottom
• border-color
• border-image
• border-inline
• border-inline-color
• border-inline-end
• border-inline-start
• border-inline-style
• border-inline-width
• border-left
• border-radius
• border-right
• [ ] border-spacing (actually not a border property…)
• border-style
• border-top
• border-width

Longhands:

• border-block-end-color
• border-block-end-style
• border-block-end-width
• border-block-start-color
• border-block-start-style
• border-block-start-width
• border-bottom-color
• border-bottom-left-radius
• border-bottom-right-radius
• border-bottom-style
• border-bottom-width
• border-collapse
• border-end-end-radius
• border-end-start-radius
• border-image-outset
• border-image-repeat
• border-image-slice
• border-image-source
• border-image-width
• border-inline-end-color
• border-inline-end-style
• border-inline-end-width
• border-inline-start-color
• border-inline-start-style
• border-inline-start-width
• border-left-color
• border-left-style
• border-left-width
• border-right-color
• border-right-style
• border-right-width
• border-start-end-radius
• border-start-start-radius
• border-top-color
• border-top-left-radius
• border-top-right-radius
• border-top-style
• border-top-width