First Addons for VDBS

So here are a few snippets to change up the Vore DBS.  Just place one of these snippets after the Vore DBS script.  Note that these snippets were made on a one-by-one basis so multiple snippets may not work together.

Digest (Percent) - This changes the Digest and PreyDigest tags to remove HP by percent rather than flat damage.

Digest (Formula) - This changes the Digest tag into <DigestHP: formula> and <DigestMP: formula> (and PreyDigest too).  The formula has a = pred and b = prey.

Digest Switches and Removal - This allow you to do the following:
- Prey with <DigestSwitch: id> turns that switch on.
- Prey with <DigestVariable: id type> changes that variable depending on type:
-- 1 - Adds 1
-- 2 - Subtract 1
-- 3 - Get ID of current map.
-- 4 - Get ID of pred.
-- 5 - Reset to 0
- Party Removal if Prey with <DigestRemove> is dead (last prey is not removed so that Defeat is triggered).
- Defeat if Prey with <DigestGameOver> is dead.

Healgestion - Allied Prey with <HealgestionHP: formula> or <HealgestionMP: formula> will not receive Digestion damage and will heal their friendly pred that amount.