[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/main_page/sidebar_section/SidebarSection.jsx

@@ -0,0 +1,25 @@
+import clsx from "clsx";
+
+import styles from "./SidebarSection.module.scss";
+import { useMainPageCompactModeStatus } from "@store";
+
+import { Logo } from "./logo/Logo";
+import { MainFunctionSwitch } from "./main_function_switch/MainFunctionSwitch";
+import { LanguageSettings } from "./language_settings/LanguageSettings";
+import { OpenSettings } from "./open_settings/OpenSettings";
+
+export const SidebarSection = () => {
+    const { currentMainPageCompactModeStatus } = useMainPageCompactModeStatus();
+    const container_class_name = clsx(styles["container"], {
+        [styles["is_compact_mode"]]: currentMainPageCompactModeStatus
+    });
+
+    return (
+        <div className={container_class_name}>
+            <Logo />
+            <MainFunctionSwitch />
+            {!currentMainPageCompactModeStatus && <LanguageSettings />}
+            <OpenSettings />
+        </div>
+    );
+};