Implement game logic and MQTT communication (battery dock)

[archerindigo]

• [x] Establish MQTT connection
• [x] Implement game logic
• [x] Handle MQTT messages

[archerindigo]

Todo:

• [x] Update/ Handle MQTT topics with the latest payload format:
  • [x] 5/battery/1/level
  • [x] 5/battery/1/uid
  • [x] 5/battery/1/location
  • [x] 5/control_room/power
• [x] Fix problem that wrong content is displayed when the battery level is 100% but the battery has not yet present at the dock yet
• [x] Tune the loop cycle period so that MQTT messages can be handled in time and NFC reader is stable

[archerindigo]

Pushed commits:

Port changed from charger to battery dock b15310b63a091177273346ffd2a5679d9c6d3149

Dock: Add control room power resume logic c852529766dd2d4f63833a974a439a3dc1245068