feat: allow users to bind to all interfaces when a proxy is enabled

- use a plugin trigger to see whether we should bind to all interfaces
- create a generic way of setting properties for a plugin
- migrate proxy-enabled to the new network property "bind-all-interfaces"
- add network:set subcommand

plugins/network/src/commands/commands.go

@@ -20,6 +20,7 @@ Additional commands:`
 	helpContent = `
     network:rebuild <app>, Rebuilds network settings for an app
     network:rebuildall, Rebuild network settings for all apps
+    network:set <app> <property> (<value>), Set or clear a network property for an app
 `
 )