feat(redux): Rename all Redux slices and store keys to match file names for clarity

- Renamed all slice names (createSlice `name` attribute) to match their file names (e.g. loopChartSlice, authSlice, kueDataSlice etc.)
- Updated `store.ts` to register each reducer with consistent key names (e.g. state.loopChartSlice instead of state.loopChart)
- Adjusted all `useSelector` and Redux state accesses across the codebase
- Improves maintainability, searchability and consistency across files and Redux DevTools

pages/kabelueberwachung.tsx

@@ -25,14 +25,14 @@ function Kabelueberwachung() {
     kueResidence,
     kueCableBreak,
     kueGroundFault,
-  } = useSelector((state) => state.kueData);
+  } = useSelector((state) => state.kueDataSlice);
 
   //----------------------------------------------------------------
   // 🚀 **TDR-Daten bereits in Redux abrufen**
   // Redux-Variablen abrufen
-  const tdrData = useSelector((state) => state.tdrChart.data);
-  const loading = useSelector((state) => state.tdrChart.loading);
-  const error = useSelector((state) => state.tdrChart.error);
+  const tdrData = useSelector((state) => state.tdrChartSlice.data);
+  const loading = useSelector((state) => state.tdrChartSlice.loading);
+  const error = useSelector((state) => state.tdrChartSlice.error);
   //----------------------------------------------------------------
 
   //----------------------------------------------------------------
@@ -110,7 +110,7 @@ function Kabelueberwachung() {
     data: loopData,
     loading: loopLoading,
     error: loopError,
-  } = useSelector((state: RootState) => state.loopChart);
+  } = useSelector((state: RootState) => state.loopChartSlice);
 
   // Zugriff z. B. auf Schleifenwiderstand von DIA1
   const dia1Schleifen = loopData["DIA1"]?.[4];