Make all options scriptable

[kurkle]

This one needs some refactoring/cleanup still, but I wanted to put it up here to see the size impact.

The main idea is to resolve from top to bottom, using known paths depending on the context we are resolving.
For dataset, there are 3 contexts, data element options, dataset options and controller options.

• options are not merged with element defaults, because we need to know if user passed some element options and consider those at higher priority than defaults
• options are flattened to dataset level (merged from top to bottom to first !== undefined value)
• that flattened object is used to resolve against
• option names need to be defined in defaults to be resolvable

Closes: #7408

TODO:

• Tests
• Animation resolution
• Documentation

[kurkle]

Filename	Size	Change
dist/chart.esm.js	62.4 kB	-153 B (0%)
dist/chart.js	89.7 kB	+632 B (0%)
dist/chart.min.js	61.3 kB	+189 B (0%)
dist/chunks/helpers.segment.js	16.5 kB	+811 B (4%)
dist/helpers.esm.js	987 B	-2 B (0%)

[kurkle]

closing in favor of #8374