gtk2,3,4: created simple configs

.config/gtk-3.0/settings.ini

@@ -1,16 +1,4 @@
 [Settings]
-gtk-theme-name=Arc-Gruvbox
-gtk-icon-theme-name=Adwaita
-gtk-font-name=IBM Plex Mono 12
-gtk-cursor-theme-size=0
-gtk-toolbar-style=GTK_TOOLBAR_TEXT
-gtk-toolbar-icon-size=GTK_ICON_SIZE_LARGE_TOOLBAR
-gtk-button-images=0
-gtk-menu-images=1
-gtk-enable-event-sounds=1
-gtk-enable-input-feedback-sounds=1
-gtk-xft-antialias=1
-gtk-xft-hinting=1
-gtk-xft-hintstyle=hintslight
-gtk-xft-rgba=rgb
-gtk-cursor-theme-name=Adwaita
+gtk-application-prefer-dark-theme = true
+gtk-icon-theme-name = Adwaita
+gtk-font-name = Sans 12