Fix #13: "last_reset" is missing (for Home Assistant)

[jedie]

See also: https://community.home-assistant.io/t/last-reset-is-missing-even-though-its-provided-in-config/435530/2

Send 'Zählerstand (Tariflos)' and 'Betriebsdauer' as total and all other as measurement

[codecov[bot]]

Codecov Report

Base: 57.99% // Head: 57.99% // No change to project coverage :thumbsup:

Coverage data is based on head (a3a6b8e) compared to base (a3a6b8e). Patch has no changes to coverable lines.

:exclamation: Current head a3a6b8e differs from pull request most recent head 01fb236. Consider uploading reports for the commit 01fb236 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #14 +/- ## ======================================= Coverage 57.99% 57.99% ======================================= Files 19 19 Lines 619 619 ======================================= Hits 359 359 Misses 260 260 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jens+Diemer). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jens+Diemer)

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