Add start/end timestamps to ActionExecuted event protobuf.

Also adds a repeated `Any` field for strategies to report strategy-specific
execution details.

First commit addressing issue #19471.

PiperOrigin-RevId: 573896902
Change-Id: I3d58cdfb503d552999c6261fc7fbd04c7d1de835

Author: michaeledgar

src/main/java/com/google/devtools/build/lib/buildeventstream/proto/BUILD

@@ -1,6 +1,6 @@
 load("@rules_java//java:defs.bzl", "java_proto_library")
-load("//tools/build_rules:utilities.bzl", "java_library_srcs")
 load("@rules_proto//proto:defs.bzl", "proto_library")
+load("//tools/build_rules:utilities.bzl", "java_library_srcs")
 
 package(default_visibility = ["//src:__subpackages__"])
 
@@ -31,6 +31,7 @@ proto_library(
         "//src/main/protobuf:command_line_proto",
         "//src/main/protobuf:failure_details_proto",
         "//src/main/protobuf:invocation_policy_proto",
+        "@com_google_protobuf//:any_proto",
         "@com_google_protobuf//:duration_proto",
         "@com_google_protobuf//:timestamp_proto",
     ],

src/main/java/com/google/devtools/build/lib/buildeventstream/proto/build_event_stream.proto

@@ -18,6 +18,7 @@ syntax = "proto3";
 
 package build_event_stream;
 
+import "google/protobuf/any.proto";
 import "google/protobuf/duration.proto";
 import "google/protobuf/timestamp.proto";
 import "src/main/java/com/google/devtools/build/lib/packages/metrics/package_load_metrics.proto";
@@ -577,6 +578,15 @@ message ActionExecuted {
 
   // Only populated if success = false, and sometimes not even then.
   failure_details.FailureDetail failure_detail = 11;
+
+  // Start of action execution, before any attempted execution begins.
+  google.protobuf.Timestamp start_time = 12;
+
+  // End of action execution, after all attempted execution completes.
+  google.protobuf.Timestamp end_time = 13;
+
+  // Additional details about action execution supplied by any/all strategies.
+  repeated google.protobuf.Any strategy_details = 14;
 }
 
 // Collection of all output files belonging to that output group.