Add Gradle wrapper and update editor config for piecing-it-together exercise

Author: zamora-carlos

exercises/practice/piecing-it-together/.meta/config.json

@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/reference/java/PiecingItTogether.java"
+    ],
+    "editor": [
+      ".meta/src/reference/java/PartialJigsawInformation.java"
     ]
   },
   "blurb": "Fill in missing jigsaw puzzle details from partial data",

exercises/practice/piecing-it-together/gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists