fix: make gradle dependencies use implementation instead of compile

compile is deprecated in gradle 7+, and users have had to explicitly add the android.arrimplementation build hint for the ZBarScanner library to force it to include via implementation.
This change makes implementation the default behaviour when using gradle 6+, but with the ability to override for a particular library using the new android.arrcompile build hint
which works the same way as the android.arrimplementation build hint.

maven/codenameone-maven-plugin/src/main/java/com/codename1/builders/AndroidGradleBuilder.java

@@ -105,6 +105,9 @@ public File getGradleProjectDirectory() {
     // which is necessary to support Push on the latest Android devices.
     private boolean newFirebaseMessaging = false;
 
+    // A flag to indicate whether we should use 'implementation' or 'compile' for dependencies
+    private boolean useArrImplementation = false;
+
     public static final String[] ANDROID_PERMISSIONS = new String[]{
             "android.permission.ACCESS_BACKGROUND_LOCATION",
             "android.permission.ACCESS_CHECKIN_PROPERTIES",
@@ -895,6 +898,7 @@ public boolean build(File sourceZip, final BuildRequest request) throws BuildExc
                     gradlePluginVersion = "3.0.1";
                 }
             } else  {
+                useArrImplementation = true;
                 gradlePluginVersion = "4.1.1";
             }
         }
@@ -992,8 +996,11 @@ public boolean build(File sourceZip, final BuildRequest request) throws BuildExc
             }
             if (file.getName().endsWith(".aar")) {
                 String name = file.getName().substring(0, file.getName().lastIndexOf("."));
-                if(request.getArg("android.arrimplementation", "").contains(
-                        name)) {
+                boolean arrCompileLib = request.getArg("android.arrcompile", "").contains(
+                        name);
+                boolean arrImplementationLib = request.getArg("android.arrimplementation", "").contains(
+                        name);
+                if(!arrCompileLib && (useArrImplementation || arrImplementationLib)) {
                     aarDependencies += "    implementation(name:'" + name + "', ext:'aar')\n";
                 } else {
                     aarDependencies += "    compile(name:'" + name + "', ext:'aar')\n";
@@ -1275,7 +1282,7 @@ public void usesClassMethod(String cls, String method) {
 
         if (useFCM) {
             String compile = "compile";
-            if (useAndroidX) {
+            if (useAndroidX || useArrImplementation) {
                 compile = "implementation";
             }
             if (!googleServicesJson.exists()) {
@@ -3266,7 +3273,7 @@ public void usesClassMethod(String cls, String method) {
         String additionalDependencies = request.getArg("gradleDependencies", "");
         if (facebookSupported) {
             String compile = "compile";
-            if (useAndroidX) {
+            if (useAndroidX || useArrImplementation) {
                 compile = "implementation";
             }
             minSDK = maxInt("15", minSDK);
@@ -3282,7 +3289,7 @@ public void usesClassMethod(String cls, String method) {
             }
         }
         String compile = "compile";
-        if (useAndroidX) {
+        if (useAndroidX || useArrImplementation) {
             compile = "implementation";
         }
         if (legacyGplayServicesMode) {
@@ -3442,7 +3449,7 @@ public void usesClassMethod(String cls, String method) {
             }
         }
 
-        String supportV4Default = "    compile 'com.android.support:support-v4:23.+'";
+        String supportV4Default;
 
         compileSdkVersion = maxPlatformVersion;
         String supportLibVersion = maxPlatformVersion;
@@ -3483,7 +3490,7 @@ public void usesClassMethod(String cls, String method) {
             gradlePropertiesObject.put("android.enableAapt2", "false");
         }
         if (!useAndroidX) {
-            supportV4Default = "    compile 'com.android.support:support-v4:"+supportLibVersion+".+'\n     implementation 'com.android.support:appcompat-v7:"+supportLibVersion+".+'\n";
+            supportV4Default = "    " + compile + " 'com.android.support:support-v4:"+supportLibVersion+".+'\n     implementation 'com.android.support:appcompat-v7:"+supportLibVersion+".+'\n";
         } else {
             String appCompatVersionDefault = "1.0.0";
             if (useGradle8) {