Moving the scooterService to a provider pattern

[TheFreal]

Rather than passing the scooter service to every single page, this makes it available across the widget tree.

QA checklist

• [ ] Read state (state & power state)
• [ ] Read primary battery SOC
• [ ] Read primary battery cycles
• [ ] Read secondary battery SOC
• [ ] Read secondary battery cycles
• [ ] Read seat closed
• [ ] Read handlebar
• [ ] Read AUX SOC
• [ ] Read CBB SOC
• [ ] Read CBB charging state
• [ ] Update ping
• [ ] SOCs are cached (after app restart)
• [ ] Commands can be sent (locking & hibernation)