Add topic on chunking considerations

[infotexture]

Include link to chunking info in the implementation dependent features topic with additional information on pros, cons, side effects & any caveats w/r/t the DITA-OT implementation of chunking.

The focus here should be on specific considerations related to how DITA-OT handles chunking, as more general DITA best practices tutorials are beyond the scope of the OT docs.

[stale]

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