Update wg_manager.sh

Use the new Policy RPDB database table layout.
Remove ability to migrate legacy 'rpxx' format rule

Prevent setting 'client' Peer 'Auto=P' if no Policy rules exist for the Peer

Update 'peer help' command to include new RPDB rule management

 peer help

	peer help								- This text
	peer									- Show ALL Peers in database
	peer peer_name								- Show Peer in database or for details e.g peer wg21 config
	peer peer_name {cmd {options} }						- Action the command against the Peer
	peer peer_name del							- Delete the Peer from the database and all of its files *.conf, *.key
	peer category								- Show Peer categories in database
	peer peer_name category [category_name {del | add peer_name[...]} ]	- Create a new category with 3 Peers e.g. peer category GroupA add wg17 wg99 wg11
	peer new [peer_name [options]]						- Create new server Peer e.g. peer new wg27 ip=10.50.99.1/24 port=12345
	peer peer_name [del|add] ipset {ipset_name[...]}			- Selectively Route IPSets e.g. peer wg13 add ipset NetFlix Hulu
	peer peer_name {rule [del {id_num} |add [wan] rule_def]}		- Manage Policy rules e.g. peer wg13 rule add 172.16.1.0/24 comment All LAN
													   peer wg13 rule add wan 52.97.133.162 comment smtp.office365.com
													   peer wg13 rule add wan 172.16.1.100 9.9.9.9 comment Quad9 DNS