Update protobuf file headers (#47)

Author: tiyash-basu-frequenz

RELEASE_NOTES.md

@@ -2,67 +2,16 @@
 
 ## Summary
 
-This release includes renaming the `EVChargerType` enum to `EvChargerType` and
-the addition of the `MetricAggregation` message.
+<!-- Here goes a general summary of what this release is about -->
 
 ## Upgrading
 
-* The submodule URL was changed to use HTTPS instead of SSH (to avoid problems trying to unlock SSH keys to do updates, etc.).
+<!-- Here goes notes on how to upgrade from previous versions, including deprecations and what they should be replaced with -->
 
-  Make sure you sync your submodules to the new URL:
-
-  ```console
-  $ git submodule sync
-  Synchronizing submodule url for 'submodules/api-common-protos'
-  ```
-
-* [`EVChargerType` enum refactored](https://github.com/frequenz-floss/frequenz-api-common/pull/21)
-
-  The enum with the oder variants was compiled into the following rust enum
-  (by prost):
-  ```rust
-  pub enum EvChargerType {
-      /// Default type.
-      EvchargerTypeUnspecified = 0,
-      /// The EV charging station supports AC charging only.
-      EvchargerTypeAc = 1,
-      /// The EV charging station supports DC charging only.
-      EvchargerTypeDc = 2,
-      /// The EV charging station supports both AC and DC.
-      EvchargerTypeHybrid = 3,
-  }
-  ```
-  Here the enum variants were unnecessarily prefixed with `EvchargerType`.
-  This lead to accessing the enum variants in a very verbose manner, e.g.,
-  `EvChargerType::EvchargerTypeHybrid`.
-
-  The changed version of the enum in this commit results in the following
-  rust enum:
-  ```rust
-  pub enum EvChargerType {
-      /// Default type.
-      Unspecified = 0,
-      /// The EV charging station supports AC charging only.
-      Ac = 1,
-      /// The EV charging station supports DC charging only.
-      Dc = 2,
-      /// The EV charging station supports both AC and DC.
-      Hybrid = 3,
-  }
-  ```
-  Here the unnecessary prefix `EvchargerType` is absent. This reduces the
-  verbosity while accessing the enum variants, making the resulting rust code
-  more readable, e.g., as `EvChargerType::Hybrid`.
-
-  This change also leads to renaming the enum from `EVChargerType` to
-  `EvChargerType`, to satisfy protolint requirements.
 ## New Features
 
-* [Added `MetricAggregation` message](https://github.com/frequenz-floss/frequenz-api-common/pull/22)
-
-  The message `MetricAggregation` has been [copied from frequenz-api-microgrid](https://github.com/frequenz-floss/frequenz-api-microgrid/blob/2b316db3d34565fa04445be62700176d07756750/proto/frequenz/api/microgrid/common.proto#L15-L99)
-  into this repository, so that it can be used by other APIs as well.
+<!-- Here goes the main new features and examples or instructions on how to use them -->
 
 ## Bug Fixes
 
-None
+<!-- Here goes notable bug fixes that are worth a special mention or explanation -->

proto/frequenz/api/common/components.proto

@@ -1,10 +1,9 @@
 // Frequenz microgrid components definitions.
 //
-// Copyright:
 // Copyright 2023 Frequenz Energy-as-a-Service GmbH
 //
-// License:
-// MIT
+// Licensed under the MIT License (the "License");
+// you may not use this file except in compliance with the License.
 
 syntax = "proto3";
 

proto/frequenz/api/common/metrics.proto

@@ -1,10 +1,9 @@
 // Metrics & bounds definitions.
 //
-// Copyright:
 // Copyright 2023 Frequenz Energy-as-a-Service GmbH
 //
-// License:
-// MIT
+// Licensed under the MIT License (the "License");
+// you may not use this file except in compliance with the License.
 
 syntax = "proto3";
 

proto/frequenz/api/common/metrics/electrical.proto

@@ -1,10 +1,9 @@
 // Contains definitions for electrical metrics (AC and DC).
 //
-// Copyright:
 // Copyright 2023 Frequenz Energy-as-a-Service GmbH
 //
-// License:
-// MIT
+// Licensed under the MIT License (the "License");
+// you may not use this file except in compliance with the License.
 
 syntax = "proto3";