swww: add page (#14424)

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/linux/swww.md

@@ -0,0 +1,25 @@
+# swww
+
+> Efficient animated wallpaper daemon for Wayland.
+> See also: `swww-daemon`.
+> More information: <https://github.com/LGFae/swww>.
+
+- Set wallpaper:
+
+`swww img {{path/to/image}}`
+
+- Set wallpaper to specified [o]utputs:
+
+`swww img -o {{output1,output2,...}} {{path/to/image}}`
+
+- Restore last wallpaper:
+
+`swww restore`
+
+- Kill daemon:
+
+`swww kill`
+
+- Display output information:
+
+`swww query`