paru: Change to match yay display

Renamed the syu file to yay, since it more explicitly captures the
concept in my mind.

Added `--bottomup` option to any paru operation since that is the way I
expect it to work: the 'closest' option is also closest to the
commandline.

sh/.config/sh/alias.d/yay.sh

@@ -7,7 +7,8 @@
 # (or at least I want to try it)
 
 type paru >/dev/null 2>&1 && {
-  alias yay=paru
+  # recreate the normal look of yay
+  alias yay="paru --bottomup"
 }
 
 syu() {