Add strfry policies and members-only LDAP policy

This will look up nostr pubkeys in the LDAP directory to allow or deny
publishing notes to the relay.

docker/strfry/strfry.conf

@@ -54,7 +54,7 @@ relay {
 
     info {
         # NIP-11: Name of this server. Short/descriptive (< 30 characters)
-        name = "akkounts-nostr-relay"
+        name = "Akkounts Nostr Relay"
 
         # NIP-11: Detailed information about relay, free-form
         description = "Local strfry instance for akkounts development"
@@ -86,7 +86,7 @@ relay {
 
     writePolicy {
         # If non-empty, path to an executable script that implements the writePolicy plugin logic
-        plugin = ""
+        plugin = "/opt/strfry-policy.ts"
     }
 
     compression {