Add wildcard domain support with DNS-01 ACME challenge flow

Support wildcard domains (*.domain.tld) in HAProxy config generation
with exact-match ACLs prioritized over wildcard ACLs. Add DNS-01
challenge endpoints that coordinate with certbot via auth/cleanup
hook scripts for wildcard SSL certificate issuance.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

templates/hap_wildcard_acl.tpl

@@ -0,0 +1,4 @@
+
+    #Wildcard method {{ domain }}
+    acl {{ name }}-acl hdr_end(host) -i .{{ base_domain }}
+    use_backend {{ name }}-backend if {{ name }}-acl