Add plank + gtk prefs

dots/gtk/3/gtk.css

@@ -0,0 +1,16 @@
+headerbar entry,
+headerbar spinbutton,
+headerbar button,
+headerbar separator {
+  margin-top: 0px;
+  margin-bottom: 0px;
+  min-height: 10px;
+}
+
+headerbar {
+  min-height: 16px;
+  padding-left: 2px;
+  padding-right: 2px;
+  margin: 0px;
+  padding: 0px;
+}

dots/gtk/3/settings.ini

@@ -0,0 +1,16 @@
+[Settings]
+gtk-application-prefer-dark-theme=0
+gtk-theme-name=Arc
+gtk-icon-theme-name=Papirus-Dark
+gtk-font-name=InconsolataLGC Nerd Font Mono 10
+gtk-cursor-theme-name=DMZ-Black
+gtk-cursor-theme-size=0
+gtk-toolbar-style=GTK_TOOLBAR_BOTH
+gtk-toolbar-icon-size=GTK_ICON_SIZE_LARGE_TOOLBAR
+gtk-button-images=1
+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=hintfull

dots/gtk/4/settings.ini

@@ -0,0 +1,2 @@
+[Settings]
+gtk-application-prefer-dark-theme=0