Add code to source plugins and themes

wish.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Source all plugins
+for i in ${WISH_PLUGINS[@]}; do
+	for j in "$XDG_CONFIG_HOME" "/usr/share" "$HOME/.config"; do
+		source "$j/wish/plugins/$i.sh" &> /dev/null && break
+	done
+	[[ $? -ne 0 ]] && echo "Plugin $i not found." >&2
+done
+
+# Source theme
+WISH_THEME=${WISH_THEME:-plain}
+for i in "$XDG_CONFIG_HOME" "/usr/share" "$HOME/.config"; do
+	source "$i/wish/themes/$WISH_THEME.sh" &> /dev/null && break
+done
+
+[[ $? -ne 0 ]] && echo "Theme $WISH_THEME not found." >&2