Rename metric_sample.proto to metrics.proto

This change renames the `metric_sample.proto` file to `metrics.proto` to
better reflect its content. The file contains multiple metric-related
messages, including `SimpleMetricValue` and `MetricSample`, which are
used to represent metric values and samples, respectively. The new name
`metrics.proto` is more descriptive and aligns with the purpose of the
file.

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

Author: tiyash-basu-frequenz

RELEASE_NOTES.md

@@ -24,6 +24,7 @@
 - Added new message definitions for streaming events (Deleted, Created, Updated)
 - Renamed `ComponentCatgoryMetadataVariant` to `ElectricalComponentCategorySpecificInfo`.
 - Renamed field `ElectricalComponent.category_type` to `ElectricalComponent.category_specific_info` to better reflect its purpose.
+- Renamed `metric_sample.proto` to `metrics.proto` to better reflect its content.
 
 ## Bug Fixes
 

proto/frequenz/api/common/v1/metrics/metric_sample.proto renamed to proto/frequenz/api/common/v1/metrics/metrics.proto

@@ -22,7 +22,7 @@ message SimpleMetricValue {
 }
 
 // Encapsulates derived statistical summaries of a single metric.
-//
+c//
 // The message allows for the reporting of statistical summaries — minimum,
 // maximum, and average values - as well as the complete list of individual
 // samples if available.

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

@@ -11,7 +11,7 @@ syntax = "proto3";
 package frequenz.api.common.v1.microgrid.electrical_components;
 
 import "frequenz/api/common/v1/metrics/bounds.proto";
-import "frequenz/api/common/v1/metrics/metric_sample.proto";
+import "frequenz/api/common/v1/metrics/metrics.proto";
 import "frequenz/api/common/v1/microgrid/electrical_components/battery.proto";
 import
   "frequenz/api/common/v1/microgrid/electrical_components/ev_charger.proto";

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

@@ -10,7 +10,7 @@ syntax = "proto3";
 
 package frequenz.api.common.v1.microgrid.sensors;
 
-import "frequenz/api/common/v1/metrics/metric_sample.proto";
+import "frequenz/api/common/v1/metrics/metrics.proto";
 import "frequenz/api/common/v1/microgrid/lifetime.proto";
 
 import "google/protobuf/timestamp.proto";