Update to pulse multiplier for accurate power data

[miragebird]

Updated average power formula and included a conversion variable for hrs to s.

What does this implement/fix?

This fix uses a new pulse multiplier formula to estimate power output, this results in a x4 increase in power output, but will be colser to the actual power output with an accuracy +/- 120 W (assuming a 1000 pulses/kWh). Ideally if the timestamps were known for each pulse (or the delta) we could increase this accuracy further. Pretty basic code change so hopefully I didn't break anything. Tested locally, but please verify on your own device using:

external_components:
  - source: github://miragebird/esphome@emerald_ble_powerfix

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Related issue or feature (if applicable): fixes WeekendWarrior1/emerald_electricity_advisor/issues/4

Test Environment

• ESP32
• ESP32 IDF
• ESP8266

Example entry for config.yaml:

external_components:
  - source: github://miragebird/esphome@emerald_ble_powerfix

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

[carryonrewardless]

+1