Allow toolset creation of Key-like behavior against tagged doors

[HolmstN]

Door

Variable	Type	Required	Purpose
REQ_KEY_TAG	string	x	Sets the item key to check in opening player's inventory
REQ_KEY_TIER	int	x	Sets the tier the item key must match or exceed to open
REQ_KEY_FAIL_MSG	string		Optionally emits a message if the opening player is denied access

Key Item

Should have a Tag that matches the REQ_KEY_TAG of any door that it should open.

EG for the Jedi Temple, this may be called JEDI_KEY in both the Door Variable and Key Tag

Also has a variable:

Variable	Type	Required	Purpose
TIER	int	x	The value the OnOpen event checks when verifying whether the user can open a door

If the TAG matches, the door will then check against the TIER. If the TIER >= the REQ_KEY_TIER, then the door will open.

Relationship

Door	Key (an NWN Item)
var: REQ_KEY_TAG	tag
var: REQ_KEY_TIER	var: TIER

[zunath]

Looks good! Thanks for the extensive documentation.