Add support for signing binaries

Resolves #65

Just applies the idea plugin like we do in allwpilib

Author: spacey-sooty

build.gradle

@@ -4,6 +4,7 @@ plugins {
     id 'maven-publish'
     id 'groovy'
     id 'java'
+    id 'idea'
 }
 
 java {

src/main/java/edu/wpi/first/nativeutils/WPINativeUtils.java

@@ -2,11 +2,13 @@
 
 import org.gradle.api.Plugin;
 import org.gradle.api.Project;
+import org.gradle.plugins.ide.idea.IdeaPlugin;
 
 public class WPINativeUtils implements Plugin<Project> {
   @Override
   public void apply(Project project) {
     project.getPluginManager().apply(NativeUtils.class);
+    project.getPluginManager().apply(IdeaPlugin.class);
 
     NativeUtilsExtension nativeExt = project.getExtensions().getByType(NativeUtilsExtension.class);