feat:pika support acl (OpenAtomFoundation#2013)

copy from redis acl
---------

Co-authored-by: Chengyu Liu <chengyu_l@126.com>

Author: lqxhub

conf/pika.conf

@@ -68,12 +68,12 @@ requirepass :
 # [NOTICE] The value of this parameter must match the "requirepass" setting on the master.
 masterauth :
 
-# The [password of user], which is empty by default.
+# The [password of user], which is empty by default.(Deprecated)
 # [NOTICE] If this user password is the same as admin password (including both being empty),
 # the value of this parameter will be ignored and all users are considered as administrators,
 # in this scenario, users are not subject to the restrictions imposed by the userblacklist.
 # PS: "admin password" refers to value of the parameter above: requirepass.
-userpass :
+# userpass :
 
 # The blacklist of commands for users that logged in by userpass,
 # the commands that added to this list will not be available for users except for administrator.
@@ -471,3 +471,33 @@ cache-maxmemory-samples: 5
 # cache-lfu-decay-time
 cache-lfu-decay-time: 1
 
+
+# is possible to manage access to Pub/Sub channels with ACL rules as well. The
+# default Pub/Sub channels permission if new users is controlled by the
+# acl-pubsub-default configuration directive, which accepts one of these values:
+#
+# allchannels: grants access to all Pub/Sub channels
+# resetchannels: revokes access to all Pub/Sub channels
+#
+# acl-pubsub-default defaults to 'resetchannels' permission.
+# acl-pubsub-default : resetchannels
+
+# ACL users are defined in the following format:
+# user : <username> ... acl rules ...
+#
+# For example:
+#
+# user : worker on >password ~key* +@all
+
+# Using an external ACL file
+#
+# Instead of configuring users here in this file, it is possible to use
+# a stand-alone file just listing users. The two methods cannot be mixed:
+# if you configure users here and at the same time you activate the external
+# ACL file, the server will refuse to start.
+#
+# The format of the external ACL user file is exactly the same as the
+# format that is used inside pika.conf to describe users.
+#
+# aclfile : ../conf/users.acl
+