Moved PInvoke stuff to seperate class, Added jank force refresh of window on theme change

InvisPopup.cs

@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace VRCX
+{
+    public partial class InvisPopup : Form
+    {
+        public InvisPopup()
+        {
+            InitializeComponent();
+        }
+
+        protected override void SetVisibleCore(bool value)
+        {
+            this.WindowState = FormWindowState.Minimized;
+            base.SetVisibleCore(value);
+        }
+    }
+}