Add void support, plus some other updates

install-stuff/install-claws-mail.bash

@@ -21,6 +21,10 @@ elif command_exists "dnf"; then
     cd ~
     git clone https://git.askiiart.net/askiiart/gpg-email-helper
     cd -
+elif command_exists "xbps-install"; then
+    sudo xbps-install claws-mail spamassassin
+    ln -s /etc/sv/spamd /var/service/
+    sv start spamd
 else
     echo "IDK"
 fi