Sourcemaps not being created

[argentini]

Using stencil.config.ts sass() options like the following do nothing:

sass({   
    sourceMap: true,
    sourceMapEmbed: true,
    sourceMapContents: true
})

No sourcemap data is generated in the resulting CSS file, and no *.cs.map file is generated when specifying a sourcemap path.

[icex]

I would love to see this properly implemented.

[splitinfinities]

We do have component source maps on deck, so help adding them to sass and beyond would be huge! If someone has capacity to implement (Notably after we get source maps into @stencil/core) that would be huge.