* nemo/scenarios.py: Fix ruff warnings.

Need to run isort --profile black --line-length=79. The default line
length for black is 88 which then triggers flake8 warnings about lines
being too long!

nemo/scenarios.py

@@ -11,12 +11,30 @@
 """Supply side scenarios."""
 
 from nemo import configfile, regions
-from nemo.generators import (CCGT, CCGT_CCS, CST, OCGT, Biofuel, Black_Coal,
-                             CentralReceiver, Coal_CCS, DemandResponse, Hydro,
-                             PumpedHydroPump, PumpedHydroTurbine, PV1Axis,
-                             Wind, WindOffshore)
-from nemo.polygons import (WILDCARD, cst_limit, offshore_wind_limit, pv_limit,
-                           wind_limit)
+from nemo.generators import (
+    CCGT,
+    CCGT_CCS,
+    CST,
+    OCGT,
+    Biofuel,
+    Black_Coal,
+    CentralReceiver,
+    Coal_CCS,
+    DemandResponse,
+    Hydro,
+    PumpedHydroPump,
+    PumpedHydroTurbine,
+    PV1Axis,
+    Wind,
+    WindOffshore,
+)
+from nemo.polygons import (
+    WILDCARD,
+    cst_limit,
+    offshore_wind_limit,
+    pv_limit,
+    wind_limit,
+)
 from nemo.storage import PumpedHydroStorage
 from nemo.types import UnreachableError