Introduce edition 2024 transform

This just sets up the transform and implements one piece of it.  Specifically, it updates the edition to 2024 and migrates feature dependencies to `import option`.  Further transforms will be added in later changes.

PiperOrigin-RevId: 803656952

Author: mkruskal-google

java/core/src/main/resources/google/protobuf/java_mutable_features.proto

@@ -5,7 +5,7 @@ package pb;
 import "google/protobuf/descriptor.proto";
 
 option java_package = "com.google.protobuf";
-option java_outer_classname = "JavaFeaturesProto";
+option java_outer_classname = "JavaMutableFeaturesProto";
 
 extend google.protobuf.FeatureSet {
   optional JavaMutableFeatures java_mutable = 9989;