chore: import upstream snapshot with attribution

acl/schema.cgi

@@ -0,0 +1,22 @@
+#!/usr/local/bin/perl
+# Just display the Webmin LDAP schema
+
+use strict;
+use warnings;
+no warnings 'redefine';
+no warnings 'uninitialized';
+require './acl-lib.pl';    ## no critic
+our (%in, %text, %config, %access);
+$access{'pass'} || &error($text{'sql_ecannot'});
+
+&ui_print_unbuffered_header(undef, $text{'schema_title'}, "");
+
+print $text{'schema_desc'},"<p>\n";
+print &ui_table_start(undef, undef, 2);
+print &ui_table_row(undef,
+	"<pre>".&html_escape(&read_file_contents("webmin.schema"))."</pre>", 2);
+print &ui_table_end();
+print &text('schema_download', 'webmin.schema'),"<p>\n";
+
+&ui_print_footer("", $text{'index_return'});
+