fix(android): gradle 8 compatibility (#791)

Author: alexhernandez

android/build.gradle

@@ -24,7 +24,11 @@ if (isNewArchitectureEnabled()) {
 
 
 android {
-    namespace = "com.reactcommunity.rndatetimepicker"
+    def agpVersion = com.android.Version.ANDROID_GRADLE_PLUGIN_VERSION
+    if (agpVersion.tokenize('.')[0].toInteger() >= 7) {
+      namespace "com.reactcommunity.rndatetimepicker"
+    }
+
     compileSdkVersion getExtOrIntegerDefault('compileSdkVersion')
 
     // Used to override the NDK path/version on internal CI or by allowing