+ php-composer install own playbook with version downgrade for oldest php 7.4

* automatic detect php version and set php extension (for =>8 php version without installing gd, because Debian 11 need libgd3 fix for that)
* mapping tld hostname for non-www redirection moved to conf.d and copy that file to remote machine with others existing map-files
* some features in this commit not to be a tested in real environment

playbooks/debops/files/etc/nginx/conf.d/map_tld_domain.conf

@@ -0,0 +1,4 @@
+map $host $tld {
+    default $host;
+    '~^www\.(?<domain>.*)$' $domain;
+}