Update Gradle to 8.2

The Gradle distribution URL has been updated from `gradle-7.6.3-all.zip` to `gradle-8.2-all.zip` in `flutter/android/gradle/wrapper/gradle-wrapper.properties`.

Additionally:
- The namespace for the Android application has been set to "org.mlcommons.android.mlperfbench" in `flutter/android/app/build.gradle`.
- A `subprojects` block has been added to `flutter/android/build.gradle` to set the namespace for subprojects if it's not already defined.
- The `android.bundle.enableUncompressedNativeLibs=false` line has been removed from `flutter/android/gradle.properties`.

Author: anhappdev

flutter/android/app/build.gradle

@@ -25,6 +25,7 @@ if (flutterVersionName == null) {
 }
 
 android {
+    namespace "org.mlcommons.android.mlperfbench"
     compileSdkVersion 34
 
     compileOptions {

flutter/android/build.gradle

@@ -8,6 +8,15 @@ allprojects {
 rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
+    afterEvaluate { project ->
+        if (project.hasProperty('android')) {
+            project.android {
+                if (namespace == null) {
+                    namespace project.group
+                }
+            }
+        }
+    }
     project.evaluationDependsOn(':app')
 }
 

flutter/android/gradle.properties

@@ -1,4 +1,3 @@
 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-android.bundle.enableUncompressedNativeLibs=false

flutter/android/gradle/wrapper/gradle-wrapper.properties

@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-all.zip