GTK: Add GTK themes

.config/gtk-3.0/settings.ini

@@ -0,0 +1,16 @@
+[Settings]
+gtk-theme-name=Materia-Gruvbox
+gtk-icon-theme-name=Papirus-Dark-Gruvbox
+gtk-font-name=IBM Plex Sans Medium 10
+gtk-cursor-theme-name=Breeze_Snow
+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=hintslight
+gtk-xft-rgba=rgb

.gtkrc-2.0

@@ -0,0 +1,7 @@
+# Managed manually
+# If overwritten by lxappearance, assume it will be overwritten AGAIN by dot management scripts
+gtk-theme-name="Materia-Gruvbox"
+gtk-icon-theme-name="Papirus-Dark-Gruvbox"
+gtk-font-name="IBM Plex Sans Medium 10"
+gtk-cursor-theme-name="Breeze_Snow"
+