Rename "space" models, values and primitives to "size"

[andrezero]

Why

We want to share the same Size primitive and createSize() raw value between Space and Typogrpahy values

What

Note: we are NOT renaming the domain, it's still space

Rename primitives

All types in packages/libs/designer-decisions/src/inputs/types/primitives/space

• space.ts => size.ts
• all types within it become SizeValueInput, Size...
• SpaceWithUnits becomes SizeObjectLiteral
• remove 'em' from units (later...)

Note: there will be other space related values when we look into responsiveness (FluidSizeValue, maybe a separate RelativeSizeValue, BreakpointValue, ...)

Create Size and createSize()

change base of SpaceValue

from BaseNumericValue to BaseValue

Rename SpaceValue and SpaceScale

• to SizeValue to SizeScale
• rename also components ShowSpaceViz and ShowSizeViz