Add checkstyle to imgui-binding and make everything compliant to Java codestyle

imgui-binding/src/main/java/imgui/ImVec2.java

@@ -9,24 +9,28 @@ public final class ImVec2 {
     public ImVec2() {
     }
 
-    public ImVec2(float x, float y) {
+    public ImVec2(final float x, final float y) {
         this.x = x;
         this.y = y;
     }
 
     @Override
     public String toString() {
-        return "ImVec2{" +
-            "x=" + x +
-            ", y=" + y +
-            '}';
+        return "ImVec2{"
+            + "x=" + x
+            + ", y=" + y
+            + '}';
     }
 
     @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-        ImVec2 imVec2 = (ImVec2) o;
+    public boolean equals(final Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        final ImVec2 imVec2 = (ImVec2) o;
         return Float.compare(imVec2.x, x) == 0 && Float.compare(imVec2.y, y) == 0;
     }