Put the (not itself OSS?) license plugin back so we can keep the license screen

app/build.gradle

@@ -7,6 +7,7 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 apply plugin: 'jacoco'
 apply plugin: 'androidx.navigation.safeargs.kotlin'
+apply plugin: 'com.google.android.gms.oss-licenses-plugin'
 
 
 import com.android.build.OutputFile

build.gradle

@@ -62,6 +62,7 @@ buildscript {
         classpath Deps.tools_kotlingradle
         classpath Deps.androidx_safeargs
         classpath Deps.allopen
+        classpath Deps.osslicenses_plugin
 
         classpath "org.mozilla.components:tooling-glean-gradle:${Versions.mozilla_android_components}"