Add IamMeter integration (#30465)
* Update .coveragerc
* Update requirements_all.txt
* Create manifest.json
* Add files via upload
* add codeowner
* add codeowner.
* Update sensor.py
* Update sensor.py
* remove unused import.
* Update manifest.json
* Update sensor.py
* modify requirements_all.txt.
* order imports.
* Update sensor.py
* Use DataUpdateCoordinator rewrite code
* set should_poll to False
* remove unused code 'serial'.
* add available prop
* Update homeassistant/components/iammeter/sensor.py
Co-Authored-By: springstan <46536646+springstan@users.noreply.github.com>
* Update homeassistant/components/iammeter/sensor.py
Co-Authored-By: springstan <46536646+springstan@users.noreply.github.com>
* Update homeassistant/components/iammeter/sensor.py
Co-Authored-By: springstan <46536646+springstan@users.noreply.github.com>
* Update homeassistant/components/iammeter/sensor.py
Co-Authored-By: Martin Hjelmare <marhje52@gmail.com>
* Update homeassistant/components/iammeter/sensor.py
Co-Authored-By: Martin Hjelmare <marhje52@gmail.com>
* Update homeassistant/components/iammeter/sensor.py
Co-Authored-By: Martin Hjelmare <marhje52@gmail.com>
* Update sensor.py
* Update sensor.py
Co-authored-by: springstan <46536646+springstan@users.noreply.github.com>
Co-authored-by: Martin Hjelmare <marhje52@gmail.com>
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