feat: add Tibber feed-in tariff provider (#1189)

The `FeedInTariffTibber` provider requests `priceInfo` and `priceInfoRange` with
`resolution: QUARTER_HOURLY` and preserves the native 15-minute timestamps. It uses Tibber's
`energy` spot-price component without the `tax` part or EOS electricity-price charges. The
end-customer `total` component is deliberately ignored.

The provider deliberately rejects hourly API responses instead of silently repeating them. It
reuses `elecprice.tibber.access_token` and `elecprice.tibber.home_id`, so no duplicate credentials
are needed.

Signed-off-by: Andreas Schmitz <akkudoktor.net>
Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

tests/test_prediction.py

@@ -11,6 +11,7 @@ from akkudoktoreos.prediction.feedintariffakkudoktor import FeedInTariffAkkudokt
 from akkudoktoreos.prediction.feedintariffenergycharts import FeedInTariffEnergyCharts
 from akkudoktoreos.prediction.feedintarifffixed import FeedInTariffFixed
 from akkudoktoreos.prediction.feedintariffimport import FeedInTariffImport
+from akkudoktoreos.prediction.feedintarifftibber import FeedInTariffTibber
 from akkudoktoreos.prediction.loadakkudoktor import (
     LoadAkkudoktor,
     LoadAkkudoktorAdjusted,
@@ -52,6 +53,7 @@ def forecast_providers():
         FeedInTariffEnergyCharts(),
         FeedInTariffFixed(),
         FeedInTariffImport(),
+        FeedInTariffTibber(),
         LoadAkkudoktor(),
         LoadAkkudoktorAdjusted(),
         LoadVrm(),
@@ -107,20 +109,21 @@ def test_provider_sequence(prediction):
     assert isinstance(prediction.providers[6], FeedInTariffEnergyCharts)
     assert isinstance(prediction.providers[7], FeedInTariffFixed)
     assert isinstance(prediction.providers[8], FeedInTariffImport)
-    assert isinstance(prediction.providers[9], LoadAkkudoktor)
-    assert isinstance(prediction.providers[10], LoadAkkudoktorAdjusted)
-    assert isinstance(prediction.providers[11], LoadVrm)
-    assert isinstance(prediction.providers[12], LoadImport)
-    assert isinstance(prediction.providers[13], PVForecastAkkudoktor)
-    assert isinstance(prediction.providers[14], PVForecastVrm)
-    assert isinstance(prediction.providers[15], PVForecastPVNode)
-    assert isinstance(prediction.providers[16], PVForecastForecastSolar)
-    assert isinstance(prediction.providers[17], PVForecastSolcast)
-    assert isinstance(prediction.providers[18], PVForecastImport)
-    assert isinstance(prediction.providers[19], WeatherBrightSky)
-    assert isinstance(prediction.providers[20], WeatherClearOutside)
-    assert isinstance(prediction.providers[21], WeatherOpenMeteo)
-    assert isinstance(prediction.providers[22], WeatherImport)
+    assert isinstance(prediction.providers[9], FeedInTariffTibber)
+    assert isinstance(prediction.providers[10], LoadAkkudoktor)
+    assert isinstance(prediction.providers[11], LoadAkkudoktorAdjusted)
+    assert isinstance(prediction.providers[12], LoadVrm)
+    assert isinstance(prediction.providers[13], LoadImport)
+    assert isinstance(prediction.providers[14], PVForecastAkkudoktor)
+    assert isinstance(prediction.providers[15], PVForecastVrm)
+    assert isinstance(prediction.providers[16], PVForecastPVNode)
+    assert isinstance(prediction.providers[17], PVForecastForecastSolar)
+    assert isinstance(prediction.providers[18], PVForecastSolcast)
+    assert isinstance(prediction.providers[19], PVForecastImport)
+    assert isinstance(prediction.providers[20], WeatherBrightSky)
+    assert isinstance(prediction.providers[21], WeatherClearOutside)
+    assert isinstance(prediction.providers[22], WeatherOpenMeteo)
+    assert isinstance(prediction.providers[23], WeatherImport)
 
 
 def test_provider_by_id(prediction, forecast_providers):
@@ -142,6 +145,7 @@ def test_prediction_repr(prediction):
     assert "FeedInTariffEnergyCharts" in result
     assert "FeedInTariffFixed" in result
     assert "FeedInTariffImport" in result
+    assert "FeedInTariffTibber" in result
     assert "LoadAkkudoktor" in result
     assert "LoadVrm" in result
     assert "LoadImport" in result