Multiplayer Sharing - Player Groups: Access to Inventories.

Currently, a server can be configured to define player groups with different permissions. However, the current settings are too restrictive to allow meaningful and constructive public access.
Players in a group can either access all inventories or none. Therefore:
- If access is allowed, then collected resources can be completely looted by another group.
- If access is denied to a group, they will not be able to take or store anything in the inventories.

I propose a system so that a group can protect certain resources and allow certain resources to be freely exchanged: add a function that allows the player to "lock" inventories (chests, workshops, feeders, etc.)
so:
- "Locked" inventories could only be accessible to members of the same group
- Unlocked inventories would be accessible to everyone, thus allowing collaboration and exchanges between groups.

This function could be used when pointing at the inventory object with an "L to Lock" command added to "E - Open"