Add Iskra IE.x meters specification

[jchevalier7]

Hey!
In Belgium they are deploying the new Iskra IE.5 and IE.7 meter which is not following yet the Belgian specification and I created the new 'ISKRA_IE' class.

Take note that the checksum is disabled in the code as the checksum sent by the meter is wrong, probably because the data is not complete yet.

Python tests are created and passing.
Tested with a P1 to USB cable and data are correctly read from the telegram.

[ndokter]

Thank you for your contribution!

[3djc]

@ndokter , could you let us know if this PR is included in 1.2.0 release ? The date it was merged would suggest that yes, but release notes do not mention it

[3djc]

Responding to self, it seems included, result of test run localy

EQUIPMENT_IDENTIFIER_GAS: 89547619 [None]
P1_MESSAGE_TIMESTAMP: 2023-04-05T07:58:03+00:00 [None]
ELECTRICITY_USED_TARIFF_1: 18.370 [kWh]
ELECTRICITY_USED_TARIFF_2: 43.912 [kWh]
ELECTRICITY_DELIVERED_TARIFF_1: 126.308 [kWh]
ELECTRICITY_DELIVERED_TARIFF_2: 3.603 [kWh]
ELECTRICITY_ACTIVE_TARIFF: 0001 [None]
CURRENT_ELECTRICITY_USAGE: 0.000 [kW]
CURRENT_ELECTRICITY_DELIVERY: 0.445 [kW]
INSTANTANEOUS_ACTIVE_POWER_L1_POSITIVE: 0.000 [kW]
INSTANTANEOUS_ACTIVE_POWER_L2_POSITIVE: 0.000 [kW]
INSTANTANEOUS_ACTIVE_POWER_L3_POSITIVE: 0.000 [kW]
INSTANTANEOUS_ACTIVE_POWER_L1_NEGATIVE: 0.363 [kW]
INSTANTANEOUS_ACTIVE_POWER_L2_NEGATIVE: 0.000 [kW]
INSTANTANEOUS_ACTIVE_POWER_L3_NEGATIVE: 0.079 [kW]
INSTANTANEOUS_VOLTAGE_L1: 238.7 [V]
INSTANTANEOUS_VOLTAGE_L2: 0.0 [V]
INSTANTANEOUS_VOLTAGE_L3: 242.2 [V]
INSTANTANEOUS_CURRENT_L1: 4 [A]
INSTANTANEOUS_CURRENT_L2: 0 [A]
INSTANTANEOUS_CURRENT_L3: 1 [A]
ACTUAL_SWITCH_POSITION: 1 [None]
TEXT_MESSAGE: None [None]
EQUIPMENT_IDENTIFIER: None [None]
MBUS DEVICE (channel 1)
EQUIPMENT_IDENTIFIER: None [None]

[ndokter]

@ndokter , could you let us know if this PR is included in 1.2.0 release ? The date it was merged would suggest that yes, but release notes do not mention it

Hi thanks for mentioning it. I have added it, and another addition, to the release notes of v1.2.0!