Support New extended Battery Service 1.1

[mkuettner97]

Add support for new Battery service including current consumption ...

https://www.bluetooth.com/specifications/specs/bas-1-1/

See firmware for details and supported fields:

struct battery_level_status {
uint8_t flags;
uint16_t power_state;
/uint16_t identifier;
uint8_t battery_level;
uint8_t additional_status;/
} attribute((packed));

// Battery Energy Status
struct battery_energy_status {
uint8_t flags;
//struct sfloat external_power_source;
struct sfloat voltage;
//struct sfloat available_energy;
struct sfloat available_capacity;
struct sfloat charge_rate;
//struct sfloat available_energy_last;
} attribute((packed));

// Battery Energy Status
struct battery_health_status {
uint8_t flags;
uint8_t battery_health_summary;
uint16_t cycle_count;
int8_t current_temperature;
//uint16_t deep_discharge_count;
} attribute((packed));