Rename grid to grid_connection_point in electrical_components.proto

This commit renames the electrical component category
`COMPONENT_CATEGORY_GRID` to
`ELECTRICAL_COMPONENT_CATEGORY_GRID_CONNECTION_POINT` in the proto file.
(the name change of the enum is part of a larger refactoring of the
electrical component category enum).

The oneof variant `ComponentCategoryMetadataVariant.metadata.grid` has
also been renamed to
`ElectricalComponentCategorySpecificInfo.info.grid_connection_point` to
better reflect its purpose.

Signed-off-by: Tiyash Basu <[email protected]>

# Conflicts:
#	RELEASE_NOTES.md

Author: tiyash-basu-frequenz

RELEASE_NOTES.md

@@ -24,6 +24,8 @@
 - Added new message definitions for streaming events (Deleted, Created, Updated)
 - Remove unnecessary gap in numbering in the `ElectricalComponentCategory` enum.
 - Renumber variants in the `Metric` enum to remove unnecessary gaps.
+- Renamed electrical component category `COMPONENT_CATEGORY_GRID` to `ELECTRICAL_COMPONENT_CATEGORY_GRID_CONNECTION_POINT` to clarify its meaning. Note that the change in the enum change is a part of a larger refactoring of the electrical component category enum.
+- The oneof variant `ComponentCategoryMetadataVariant.metadata.grid` has been renamed to `ElectricalComponentCategorySpecificInfo.info.grid_connection_point` to better reflect its purpose.
 
 ## Bug Fixes
 

proto/frequenz/api/common/v1/microgrid/electrical_components/electrical_components.proto

@@ -30,7 +30,7 @@ enum ElectricalComponentCategory {
   ELECTRICAL_COMPONENT_CATEGORY_UNSPECIFIED = 0;
 
   // The point where the local microgrid is connected to the grid.
-  ELECTRICAL_COMPONENT_CATEGORY_GRID = 1;
+  ELECTRICAL_COMPONENT_CATEGORY_GRID_CONNECTION_POINT = 1;
 
   // A meter, for measuring electrical metrics, e.g., current, voltage, etc.
   ELECTRICAL_COMPONENT_CATEGORY_METER = 2;
@@ -326,7 +326,7 @@ message ElectricalComponentCategoryMetadataVariant {
       ev_charger = 2;
     frequenz.api.common.v1.microgrid.electrical_components.Fuse fuse = 3;
     frequenz.api.common.v1.microgrid.electrical_components.GridConnectionPoint
-      grid = 4;
+      grid_connection_point = 4;
     frequenz.api.common.v1.microgrid.electrical_components.Inverter
       inverter = 5;
     frequenz.api.common.v1.microgrid.electrical_components.VoltageTransformer