Energy support and bugfixes

• Stick: Add new properties energy_consumption_today counter and energy_consumption_today_last_reset timestamp. These properties
  can be used to properly measure the used energy. Very useful for the 'Energy' capabilities introduced in Home Assistant 2021.8.
• Stick: Synchronize clock of all plugwise devices once a day
• Stick: Reduced local clock drift from 30 to 5 seconds
• Stick: Optimized retrieval and handling of energy history
• Smile: add the required sensor attributes for Energy support
• Smile: add last_reset timestamps for interval-sensors and cumulative sensors
• Smile: fix the unit_of_measurement of electrical-cumulative-sensors (Wh --> kWh)

Fix new and remaining pylint warnings

Merge pull request #91 from plugwise/fix_act_dev_pr_init

Fix new/remaining pylint warnings

Code improvements

• Smile: improve use of protection for functions and parameter
• Fix pylint warnings and errors

Move functionality into backend, rearrange data in output

Rearrange data: the outputs of get_all_devices() and get_device_data() are combined into self.gw_devices. Binary_sensors, sensors and switches are included with all their attributes, in lists.
Two classes have been added (entities.py), one for master_thermostats and one for binary_sensors, these classes now handle the processing of data previously done in plugwise-beta (climate.py and binary_sensor.py).

Stick: bugfix, general: quality improvements.

Stick: quality improvements and fixing plugwise-beta bug #168
Smile: many quality-related improvements, no changes in functionality

Add lock-state switches

• Support for getting and setting the lock-state of Plugs-, Circles-, Stealth-switches. A set lock-state prevents a switch from being turned off.
• There is no lock_state available for the following special Plugwise classes: central heating pump and value actuator.

Smile optimize

• Functions not called by the plugwise(-beta) code have been moved to helper.py in which they are part of the subclass SmileHelper
• All for-loops are now executed only once, the results are stored in self-parameters.
• Added fw, model and vendor information into the output of get_device_data(), for future use in the HA Core Plugwise(-beta) Integration
• Split off HEATER_CENTRAL_MEASUREMENTS from DEVICE_MEASUREMENTS so they can be blocked when there is no Auxiliary device present
• Collect only the data from the Smile that is needed: full_update_device() for initialization, update-device() for updating of live data
• Adapt test_smile.py to the new code, increase test-coverage further

Add DHW Comfort Mode switch

Implements #63

API change for stick

• Improvement: Debounce relay state
• Improvement: Prioritize request so requests like switching a relay get send out before power measurement requests.
• Improvement: Dynamically change the refresh interval based on the actual discovered nodes with power measurement capabilities
• Added: New property attributes for USB-stick.
  The old methods are still available but will give a deprecate warning
  • Stick
    • devices (dict) - All discovered and supported plugwise devices with the MAC address as their key
    • joined_nodes (integer) - Total number of registered nodes at Plugwise Circle+
    • mac (string) - The MAC address of the USB-Stick
    • network_state (boolean) - The state (on-line/off-line) of the Plugwise network.
    • network_id (integer) - The ID of the Plugwise network.
    • port (string) - The port connection string
  • All plugwise devices
    • available (boolean) - The current network availability state of the device
    • battery_powered (boolean) - Indicates if device is battery powered
    • features (tuple) - List of supported attribute IDs
    • firmware_version (string) - Firmware version device is running
    • hardware_model (string) - Hardware model name
    • hardware_version (string) - Hardware version of device
    • last_update (datetime) - Date/time stamp of last received update from device
    • mac (string) - MAC address of device
    • measures_power (boolean) - Indicates if device supports power measurement
    • name (string) - Name of device based om hardware model and MAC address
    • ping (integer) - Network roundtrip time in milliseconds
    • rssi_in (integer) - Inbound RSSI level in DBm
    • rssi_out (integer) - Outbound RSSI level based on the received inbound RSSI level of the neighbor node in DBm
  • Scan devices
    • motion (boolean) - Current detection state of motion.
  • Sense devices
    • humidity (integer) - Last reported humidity value.
    • temperature (integer) - Last reported temperature value.
  • Circle/Circle+/Stealth devices
    • current_power_usage (float) - Current power usage (Watts) during the last second
    • current_power_usage_8_sec (float) - Current power usage (Watts) during the last 8 seconds
    • power_consumption_current_hour (float) - Total power consumption (kWh) this running hour
    • power_consumption_previous_hour (float) - Total power consumption (kWh) during the previous hour
    • power_consumption_today (float) - Total power consumption (kWh) of today
    • power_consumption_yesterday (float) - Total power consumption (kWh) during yesterday
    • power_production_current_hour (float) - Total power production (kWh) this hour
    • relay_state (boolean) - State of the output power relay. Setting this property will operate the relay
  • Switch devices
    • switch (boolean) - Last reported state of switch

Code quality improvements for stick

• Bug-fix: Power history was not reported (0 value) during last week of the month
• Improvement: Validate message checksums
• Improvement: Do a single ping request to validate if node is on-line
• Improvement: Guard Scan sensitivity setting to medium
• Improvement: Move general module code of messages, nodes, connection to the init.py files.
• Improvement: Do proper timeout handling while sequence counter resets (once every 65532 messages)
• Improvement: Better code separation. All logic is in their designated files:
  1. Connection (connection/*.py)
  2. Data parsing (parser.py)
  3. Data encoding/decoding of message (messages/*.py)
  4. Message handling - Initialization & transportation (controller.py)
  5. Message processing - Do the required stuff (stick.py & nodes/*.py)
• Improvement: Resolves all flake8 comments