RFR: 8267551: Support loading images from inline data-URIs [v17]

[Michael Strauß]

On Wed, 9 Jun 2021 14:20:41 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

>> This PR adds support for loading images from [inline data URIs](https://en.wikipedia.org/wiki/Data_URI_scheme), which is also widely supported by web browsers. This enables developers to package small images in CSS files, rather than separately deploying the images alongside the CSS file.
>
> Michael Strauß has updated the pull request incrementally with one additional commit since the last revision:
> 
>   doc

I've updated the CSR with the documentation diffs.

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PR: https://git.openjdk.java.net/jfx/pull/508