Minimal nombre-inspired library

[rolyp]

A Fluid library, inspired by the R package nombre and Achintya’s PhD work, for creating phrases of natural language from numerical values. E.g.:

• “twenty-five”
• “greater than” or “less than”
• “more likely than” or “less likely than”

This can go arbitrarily rich and deep, all we need to get started are a few simple examples that we can plug into explorable-viz/fluid-examples#47.

[rolyp]

@JosephBond Bumped this to In Progress as I guess it goes alongside #1035.