[agus-darmawan]

Last polish of the docs after the operational features.

• README: report_node and alert_node in the architecture, the watchdog and way back in the package table, install with PARAMS_FILE and TELEGRAM_BOT_TOKEN, hotdog aim in teaching, links to the Site Acceptance Test and the User Manual.
• CHANGELOG: the first version grouped by area (robot, inspection, patrols, results, operation, docs); the way back starts at the nearest waypoint of the first pass.
• CONTRIBUTING: HotDog's commit scopes, Dharma branches and pins, releases.
• Commissioning: the hotdog command in steps 8 and 9.
• hotdog_interfaces: PatrolStatus with RETURNING and battery.

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