Add protovalidate annotations to DeviceSpec

These annotations are equivalent to the validation that bundletool
itself performs in DeviceSpecParser.validateDeviceSpec() in bundletool
1.18.1. Adding protovalidate annotations makes it easier for
protovalidate-using consumers of android-bundle to validate device
specs.

The code for the upstream validation method can be found at
https://github.com/google/bundletool/blob/1.18.1/src/main/java/com/android/tools/build/bundletool/device/DeviceSpecParser.java#L77.

Author: lberrymage

android/bundle/devices.proto

@@ -2,6 +2,7 @@ syntax = "proto3";
 
 package android.bundle;
 
+import "buf/validate/validate.proto";
 import "google/protobuf/wrappers.proto";
 
 option java_package = "com.android.bundle";
@@ -10,10 +11,10 @@ message DeviceSpec {
   // Supported ABI architectures in the order of preference.
   // The values should be the string as reported by the platform, e.g.
   // "armeabi-v7a" or "x86_64".
-  repeated string supported_abis = 1;
+  repeated string supported_abis = 1 [(buf.validate.field).repeated.min_items = 1];
 
   // All installed locales represented as BCP-47 strings.
-  repeated string supported_locales = 2;
+  repeated string supported_locales = 2 [(buf.validate.field).repeated.min_items = 1];
 
   // List of device features returned by the package manager utility.
   repeated string device_features = 3;
@@ -22,10 +23,10 @@ message DeviceSpec {
   repeated string gl_extensions = 4;
 
   // Screen dpi.
-  uint32 screen_density = 5;
+  uint32 screen_density = 5 [(buf.validate.field).uint32.gt = 0];
 
   // getprop ro.build.version.sdk
-  uint32 sdk_version = 6;
+  uint32 sdk_version = 6 [(buf.validate.field).uint32.gt = 0];
 
   // getprop ro.build.version.codename
   string codename = 7;

android/bundle/devices.proto.license

@@ -1,3 +1,4 @@
 Copyright (C) The Android Open Source Project
+Copyright 2025 Logan Magee
 
 SPDX-License-Identifier: Apache-2.0

buf.lock

@@ -0,0 +1,6 @@
+# Generated by buf. DO NOT EDIT.
+version: v2
+deps:
+  - name: buf.build/bufbuild/protovalidate
+    commit: 52f32327d4b045a79293a6ad4e7e1236
+    digest: b5:cbabc98d4b7b7b0447c9b15f68eeb8a7a44ef8516cb386ac5f66e7fd4062cd6723ed3f452ad8c384b851f79e33d26e7f8a94e2b807282b3def1cd966c7eace97

buf.yaml

@@ -6,6 +6,8 @@ version: v2
 modules:
   - path: .
     name: buf.build/accrescent/android-bundle
+deps:
+  - buf.build/bufbuild/protovalidate:v1.0.0
 lint:
   ignore:
     - android/bundle