[Update] Combine in one window. Rename Main/Config Window to Main/Config Page accordingly.

For now, I put Config Page to below the main page temporary. Open Config Button does not work.

src-ui/app/config_page/topbar/Topbar.module.scss

@@ -0,0 +1,12 @@
+.container {
+    width: 100%;
+    height: 0%;
+}
+
+.wrapper {
+    height: var(--config_page_topbar_height);
+    background-color: var(--dark_850_color);
+    display: flex;
+    justify-content: space-between;
+    flex-shrink: 0;
+}