android fixes

veilid-flutter/example/android/app/build.gradle

@@ -41,6 +41,13 @@ android {
         main.java.srcDirs += 'src/main/kotlin'
     }
 
+
+    // xxx why does backtrace not work in android?
+    // tried this but it doesn't help
+    // packagingOptions {
+    //     jniLibs.useLegacyPackaging = true
+    // }
+
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.veilid.veilid_example"

veilid-flutter/example/android/app/src/main/AndroidManifest.xml

@@ -1,5 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="com.veilid.veilid_example">
+          package="com.veilid.veilid_example">
     <application
         android:label="veilid_example"
         android:name="${applicationName}"

veilid-flutter/example/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath 'com.android.tools.build:gradle:7.2.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

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

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-all.zip