Lurker invis toggling

[Drulikar]

About the pull request

This PR is sort of a different implementation of #6127 opting against balloon alerts for devour that does several things:

• Lurker invis recharge is now 20s base (up from 15s)
• Lurker invis can now be toggled giving you 90% of the time you didn't use (and with 0.5s of double click prevention like I previously gave to all /datum/action/xeno_action/activable )
• Bumping still ends invisibility but refunds 50% of the time you didn't use
• Devouring now ends invisibility but refunds 50% of the time you didn't use
• Removed balloon alerts for defender crest toggling
• Code refactor to actually utilize xeno ability cooldowns means that CDR can affect the ability now, but xenos have very little access to CDR
• Changes the invisibility time remaining status message to also mention invisibility recharge time.

Explain why it's good for the game

Gives lurkers more flexibility to have their ability ready when they may need it, resolves the issue of lurkers trying to sneak a devour, and makes bumping slightly less punishing.

The increase in the recharge time is intended to make an ambush more calculated offering marines a little more time to retaliate before the lurker may vanish again.

Testing Photographs and Procedure

Screenshots & Videos

https://youtu.be/ODEF7E6lDrI

Changelog

🆑 Drathek
balance: Lurker invisibility recharge time is now 20s (up from 15s)
balance: Lurker invisibility now ends when devouring but refunds 50% of time unused
balance: Lurker invisibility bump now refunds 50% of time unused
balance: Lurker invisibility can now be toggled refunding 90% of time unused (with dbl click prevention)
del: Removed defender crest toggle balloon alerts
fix: Lurker invisibility code is refactored to properly use cooldowns and now doesn't incorrectly get interrupted by bump code
add: Lurker invisibility recharge time is now displayed in status tab
/:cl:

[realforest2001]

lgtm