Add a toString() method to Feature.

A minor quality of life improvement.

RELNOTES: None.
PiperOrigin-RevId: 882657244
Change-Id: I0c133727b9f4400a315bcd4e018a2fc5d8513cb2

Author: lberki

src/main/java/com/google/devtools/build/lib/rules/cpp/CcToolchainFeatures.java

@@ -21,6 +21,7 @@
 import com.github.benmanes.caffeine.cache.LoadingCache;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Joiner;
+import com.google.common.base.MoreObjects;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Throwables;
 import com.google.common.collect.ImmutableList;
@@ -740,6 +741,11 @@ public String getName() {
       return name;
     }
 
+    @Override
+    public String toString() {
+      return MoreObjects.toStringHelper(this).add("name", name).add("enabled", enabled).toString();
+    }
+
     /** Adds environment variables for the given action to the provided builder. */
     private void expandEnvironment(
         String action,