Enhancement: add charge_energy_used to MQTT publishing

[yeti08]

Is there an existing issue for this?

• I have checked the existing issues and discussions, and I can confirm that there are no duplicates.

What happened?

charge_energy_added is published via MQTT, but it would be useful to also publish charge_energy_used so that this data could be passed on to integrate with energy monitoring systems as in the homeassistant energy dashboard. I believe charge_energy_used would just need to be added to teslamate/mqtt/pubsub/vehicle_subscriber.ex

Expected Behavior

Report both the energy added to the battery and the energy consumed for that addition.

Can the issue reliably be reproduced?

Yes

Steps To Reproduce the issue

Enhancement

Relevant log output

N/A

Screenshots

No response

Additional data

No response

Type of installation

Docker (https://docs.teslamate.org/docs/installation/docker/)

Version

v2.1.1

PostgreSQL version

v17.6-1

Are you running latest major supported PostgreSQL version?

• I run the latest major supported PostgreSQL version

Are you using a reverse Proxy for TeslaMate?

Yes (specify in next field)

Details about your reverse Proxy if applicable

N/A

[USAFPride]

There is a stale PR request for something similar. Perhaps you can pick up that PR and add yours. You will need to work with the developers as there appears to have been naming convention issues.

[yeti08]

I tried to get the dev environment set up for a couple hours but got error after error. I'm giving up on that; I believe all that is needed is to add charge_energy_used adjacent to any case where charge_energy_added is in vehicle_subscriber_test.exs but I cannot get the dev environment up to test it.