wayland: Consolidate with mako into desktop module

Since the existing wayland module basically describes everything about
my 'desktop environment' setup already anyway, might as well rename it
accordingly. Additionally, mako is important for notifications in this
environment so it moves here as well.

desktop/.local/bin/screenshot

@@ -0,0 +1,48 @@
+#!/usr/bin/env sh
+# Take a screenshot on wayland
+# By default takes a screenshot of the whole desktop
+# If 'region' or 'area' command is passed in will allow selecting a region to screenshot.
+# Example: `screenshot region`
+
+TIME="$(date +%Y-%m-%d-%H-%M-%S)"
+readonly TIME
+readonly TMPSCREENSHOTDIR="$HOME/.cache/screenshot"
+readonly TMPIMGPATH="$TMPSCREENSHOTDIR/img-$TIME.png"
+
+FULLSCREEN=true
+
+if [ "$1" = "area" ] || [ "$1" = "region" ]; then
+    FULLSCREEN=false
+fi
+
+main() {
+    prepare_cache
+    take_screenshot "$FULLSCREEN"
+    if [ -n "$SCREENSHOT_POSTPROCESS" ]; then
+        eval "$SCREENSHOT_POSTPROCESS"
+    else
+        postprocess
+    fi
+}
+
+prepare_cache() {
+    if [ ! -d "$TMPSCREENSHOTDIR" ]; then
+        mkdir -p "$TMPSCREENSHOTDIR"
+    fi
+}
+
+take_screenshot() {
+    if $1; then
+        grim "$TMPIMGPATH"
+    else
+        grim -g "$(slurp)" "$TMPIMGPATH"
+    fi
+}
+
+postprocess() {
+    notify-send -i "$TMPIMGPATH" "Screenshot taken" "$TMPIMGPATH"
+    echo "$TMPIMGPATH" | wl-copy
+    echo "$TMPIMGPATH"
+}
+
+main "$@"