Improve ContextTask XML comments for docs

[cjsha]

The top-level summary and remarks of ContextTask is a bit jargony. Additional description, external links, or dumbing-down might help.

oni.Context or oni.Frame don't seem to be valid cref values.

https://github.com/open-ephys/onix-bonsai-onix1/blob/7ac700fb8a696d4d9f8d97c9d1b85765b9951ca6/OpenEphys.Onix1/ContextTask.cs#L12-L20

Don't repeat Clock as an example for the oni.Frame.Clock and its derivatives.

https://github.com/open-ephys/onix-bonsai-onix1/blob/7ac700fb8a696d4d9f8d97c9d1b85765b9951ca6/OpenEphys.Onix1/ContextTask.cs#L121-L125

[jonnew]

The repeated Clock, Clock issue in the above comment comes from the fact that the class name is being striped form the type. This what it looks like inside VS:

[cjsha]

<see cref="BufferedDataFrame.Clock"/> is rendered into the data model by docfx as:
<xref href="OpenEphys.Onix1.BufferedDataFrame.Clock" data-throw-if-not-resolved="false"></xref>
which is subsequently converted to html as:
<a class="xref" href="OpenEphys.Onix1.BufferedDataFrame.html">Clock</a>

I know the ideal solution is to not make any edits to the comments and somehow just keep the class name, so I made an issue for this in the docs repo. This is a more long-term issue though because I'm not immediately sure how to hook into the <xref> => <a> conversion build step.

The workaround for this in the meanwhile would be to explicitly state what text you want to be in there by wrapping it in tags:

• <see cref="BufferedDataFrame.Clock">BufferedDataFrame.Clock</see>
• <see cref="DataFrame.Clock">DataFrame.Clock</see>