Experiment with technical specification overview in KCard documentation

[MisRob]

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Use KCard as an opportunity to experiment with a new documentation section that has a concise technical specification of the component. After feedback is collected and there is clarity about the exact form of this information, it can inform documenting other complex components. The summary should help with development and QA, its main goal is to improve understanding internal features that are not apparently obvious, cannot be captured easily with unit or visual tests etc.