Refactor set_bounds() in EVChargerPool

This commit refactors the set_bounds() method in EVChargerPool
to use the Current type instead of a float for the max current,
and the parameter name was renamed to max_current to reflect
the change in type.

The Current type provides semantic clarity, unit consistency,
and better arithmetic operations when dealing with current
units compared to raw and built-in floats.

Signed-off-by: Daniel Zullo <[email protected]>

Author: daniel-zullo-frequenz

src/frequenz/sdk/timeseries/ev_charger_pool/_ev_charger_pool.py

@@ -240,19 +240,19 @@ def component_data(self, component_id: int) -> Receiver[EVChargerData]:
 
         return output_chan.new_receiver()
 
-    async def set_bounds(self, component_id: int, max_amps: float) -> None:
+    async def set_bounds(self, component_id: int, max_current: Current) -> None:
         """Send given max current bound for the given EV Charger to the microgrid API.
 
         Bounds are used to limit the max current drawn by an EV, although the exact
         value will be determined by the EV.
 
         Args:
             component_id: ID of EV Charger to set the current bounds to.
-            max_amps: maximum current in amps, that an EV can draw from this EV Charger.
+            max_current: maximum current that an EV can draw from this EV Charger.
         """
         if not self._bounds_setter:
             self._bounds_setter = BoundsSetter(self._repeat_interval)
-        await self._bounds_setter.set(component_id, max_amps)
+        await self._bounds_setter.set(component_id, max_current.as_amperes())
 
     def new_bounds_sender(self) -> Sender[ComponentCurrentLimit]:
         """Return a `Sender` for setting EV Charger current bounds with.