Remove lib.runtime.commands from lib.runtime

Pre-work for splitting `.../lib:runtime`.

This change
  - Renames `runtime/commands/ProjectFileSupport.java` to `runtime/ProjectFileSupport.java` (which was an oversight in #11417)
  - Moves `runtime.commands.CleanCommand.CleanStartingEvent` into `runtime/commands/events` to avoid having `.../lib/worker` depend on all of `.../lib/runtime/commands`.
  - Renames `runtime/commands/GotProjectFileEvent.java` to `runtime/events/GotProjectFileEvent.java` for similar reasons as above.
  - Moves License generation into a dedicated package.

Updates #10930

Closes #11452.

PiperOrigin-RevId: 312540107
diff --git a/src/test/java/com/google/devtools/build/lib/packages/BUILD b/src/test/java/com/google/devtools/build/lib/packages/BUILD
index cf6ebf2..ec361e4 100644
--- a/src/test/java/com/google/devtools/build/lib/packages/BUILD
+++ b/src/test/java/com/google/devtools/build/lib/packages/BUILD
@@ -142,6 +142,7 @@
         "//src/main/java/com/google/devtools/build/lib/rules:repository/repository_function",
         "//src/main/java/com/google/devtools/build/lib/rules/cpp",
         "//src/main/java/com/google/devtools/build/lib/rules/proto",
+        "//src/main/java/com/google/devtools/build/lib/runtime/commands",
         "//src/main/java/com/google/devtools/build/lib/skyframe:precomputed_value",
         "//src/main/java/com/google/devtools/build/lib/skyframe:skyframe_cluster",
         "//src/main/java/com/google/devtools/build/lib/skyframe/packages:PackageFactoryBuilderWithSkyframeForTesting",