Add OptionMetadataTag.EXPLICIT_IN_OUTPUT_PATH

See OptionMetadataTag.java for documentation on what the tag does.

Also audited the transitive calls of OutputDirectories.buildMnemonic and annotated options that seemingly can safely have the tag.

(Note that some, like AppleConfiguration, have a getOutputDirectory that is too intricate for me to comfortably add the tag to any of the associated options.)

Related to bazelbuild/bazel#14023.

PiperOrigin-RevId: 410335434

third_party/bazel/src/main/protobuf/option_filters.proto

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 syntax = "proto3";
+
 package options;
 
 // option java_api_version = 2;
@@ -54,4 +55,5 @@ enum OptionMetadataTag {
   INTERNAL = 4;
   reserved "TRIGGERED_BY_ALL_INCOMPATIBLE_CHANGES";
   reserved 5;
+  EXPLICIT_IN_OUTPUT_PATH = 6;
 }