[jfx18] RFR: 8279345: Realign class docs of LightBase and subclasses [v4]

[Kevin Rushforth]

On Thu, 27 Jan 2022 19:57:13 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> Now that the standard concrete light types were added, there is an opportunity to rearrange and rewrite some of the class docs. Here is a summary of the changes:
>> 
>> * Moved the explanations of attenuation and direction up to `LightBase` since different light types share characteristics. `LightBase` now contains a summary of its subtypes and all the explanations of the properties/characteristics of the lights divided into sections: Color, Scope, Direction, Attenuation.
>> * Each light type links to the relevant section in `LightBase` when it mentioned the properties it has.
>> * Added examples of real-world applications for each light type.
>> * Consolidated the writing style for all the subclasses.
>
> Nir Lisker has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Fixed table accessibility

The latest changes all look good. The only open question is around the description of `AmbientLight`.

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PR: https://git.openjdk.java.net/jfx/pull/717