LDAP fix: handle legal boolean return result from searchUsers()

Carp improvements

The old script had a lot of unused code in it, either stuff that couldn't be configured from OPNsense or dead code.

Revert "(ids) style fix", https://github.com/opnsense/core/commit/aaa0ddafe1179cebc68146bdc3c30b8b90c564b8 can cause "Allowed memory size of ... bytes exhausted", better to set a sane default max here.

This reverts commit aaa0ddaf.

(firmware) add configd "firmware loader" commands to control the contents of /boot/loader.conf.local

plugins can use this call to register new bootup parameters, new commands added:

configctl firmware loader show
configctl firmware loader rm <parameter>
configctl firmware loader edit <parameter> <value>

(crashreport) PHP Warning:  in_array() expects parameter 2 to be array, null given in /usr/local/www/services_unbound.php on line 176

(crashreport) PHP Warning:  Illegal string offset 'rule' in /usr/local/www/diag_logs_filter.php on line 277

(crashreport) limit output chunks to 5MB, if we can't find </head> within that area it's very unlikely that it exists in the output.

report:
PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 35997807 bytes) in /usr/local/www/csrf/csrf-magic.php on line 144

(packet capture) limit the maximum number of output lines, prevent "PHP Fatal error:  Allowed memory size of ..."

collected from crashreport

(crashreport) PHP Warning:  in_array() expects parameter 2 to be array, null given in /usr/local/www/vpn_openvpn_csc.php on line 406