expand the accent magic iterable to return full colour objects instead of just identifiers

[backwardspy]

flavor is automatically expanded right before a multi-file render:

whiskers/src/main.rs

Lines 555 to 567 in 9a7d0be

	// expand flavor automatically to prevent requiring:
	// `{% set flavor = flavors[flavor] %}`
	// at the top of every template.
	if key == "flavor" {
	let flavor: catppuccin::FlavorName = value.parse()?;
	let flavor = &palette.flavors[flavor.identifier()];
	ctx.insert("flavor", flavor);
	// also throw in the flavor's colors for convenience
	for (_, color) in flavor {
	ctx.insert(&color.identifier, &color);
	}
	} else {

we may have to defer the expansion of accent to a second pass after the rest of the matrix has been expanded into the template context, since it's dependent on the flavour to get the correct colour object.