dotfiles: move .config/* to root

This seems to make more sense. Almost all files were within .config
anyway.

Signed-off-by: Joe Groocock <me@frebib.net>

X11/xbindkeysrc

@@ -0,0 +1,15 @@
+# thumb wheel up => increase volume and unmute
+"xdotool key --clearmodifiers XF86AudioRaiseVolume"
+   b:6
+
+# thumb wheel down => lower volume
+"xdotool key --clearmodifiers XF86AudioLowerVolume"
+   b:7
+
+# backward button => previous song
+"xte 'key XF86AudioPrev'"
+   b:8
+
+# forward button => next song
+"xte 'key XF86AudioNext'"
+   b:9