[build] Apply spotless for java formatting (#1768)

Update checkstyle config to be compatible with spotless.

Co-authored-by: Austin Shalit <austinshalit@gmail.com>

cscore/src/dev/java/edu/wpi/cscore/DevMain.java

@@ -7,15 +7,12 @@ package edu.wpi.cscore;
 import edu.wpi.first.wpiutil.RuntimeDetector;
 
 public final class DevMain {
-  /**
-   * Main method.
-   */
+  /** Main method. */
   public static void main(String[] args) {
     System.out.println("Hello World!");
     System.out.println(RuntimeDetector.getPlatformPath());
     System.out.println(CameraServerJNI.getHostname());
   }
 
-  private DevMain() {
-  }
+  private DevMain() {}
 }