Adds some integration with firefox.

This is still rather unstable, but it runs.

interface/build.gradle

@@ -1,12 +1,12 @@
+/*
+ * Copyright (c) 2021 William Hubbard. All Rights Reserved.
+ */
+
 plugins {
     id 'java'
     id 'application'
 }
 
-/*
- * Copyright (c) 2021 William Hubbard. All Rights Reserved.
- */
-
 // In this section you declare where to find the dependencies of your project
 repositories {
     mavenCentral()
@@ -16,6 +16,7 @@ repositories {
 dependencies {
     // The production code uses the SLF4J logging API at compile time
     implementation 'org.slf4j:slf4j-api:1.7.25'
+    implementation 'com.google.code.gson:gson:2.8.7'
 
     // Declare the dependency for your favourite test framework you want to use in your tests.
     // TestNG is also supported by the Gradle Test task. Just change the
@@ -25,4 +26,6 @@ dependencies {
 }
 
 // Define the main class for the application
-mainClassName = defaultPackage + '.player.Interface'
+mainClassName = defaultPackage + '.player.Interface'
+
+compileJava.dependsOn rootProject.bundleAddOn