Add rendering implementation for LWJGL

imgui-binding/src/main/java/imgui/enums/ImGuiDir.java

@@ -0,0 +1,20 @@
+package imgui.enums;
+
+public enum ImGuiDir {
+    None(-1),
+    Left(0),
+    Right(1),
+    Up(2),
+    Down(3),
+    COUNT(4);
+
+    private final int code;
+
+    ImGuiDir(int code) {
+        this.code = code;
+    }
+
+    public int toInt() {
+        return code;
+    }
+}