Hugging respawn delay and join as xeno refactoring

[Drulikar]

About the pull request

This PR sets a time of death on a successful hug. However, that time of death will not affect their position in larva queue. It also updates the join as facehugger verb to mention that eggs are also a way to join as a facehugger.

This has been revised to only prevent immediate respawning as a lesser drone on successful hug (huggers can still try to become a hugger again immediately). I also bumped the lesser drone respawn time from 30s to 1 minute, and fixed a situation where the join as xeno button wasn't checking the bypass_time_of_death_checks variable set for lessers & huggers.

In addition, there were various inconsistencies between joining as a xeno between larva queue, ctrl click, and join as xeno verb that have been rectified.

To recap:

• Dying as a hugger or lesser drone will not alter your larva queue position, and now the join as xeno button being used to take over an afk xeno will not be prevented for recent death (larva queue already had this exception).
• Dying as a lesser will require you to wait 1 minute to respawn as a lesser again, or 3 minutes to respawn as a hugger.
• Dying as a hugger will require you to wait 1 minute to respawn as a lesser, or 3 minutes to respawn as a hugger again.
• Successfully hugging as a hugger will require you to wait 1 minute to respawn as a lesser, or 0 minutes to respawn as a hugger again.

Explain why it's good for the game

A lone player hugging someone, then immediately spawning as a lesser to go rush to that cap borders on breaking the metagaming rule even though the entire hive should have the knowledge of the hug (they were part of the hive but became a ghost). At the moment another ghost could just then immediately spawn and go cap that new hug, but that will be later mitigated with https://hackmd.io/@Drathek/rJ9zXhzSC

Testing Photographs and Procedure

Screenshots & Videos

Hugger testing:
https://youtu.be/fjcy8L32w1U (prior to 1 minute respawn change for lesser)

Join as xeno refactoring:
https://youtu.be/HnsVlBq8DDc

Changelog

🆑 Drathek
balance: Player huggers now have to wait 1 minute to respawn as a lesser on successful hug (same as death). They can still immediately respawn as a hugger on successful hug.
balance: Lesser drones respawn time has been increased from 30s to 1 minute.
fix: Join as xeno button/verb (much like larva queue) no longer considers a recent hugger/lesser death as a reason to deny it.
fix: Fixed join as xeno button/verb allowing 0 health afk xenos to be controlled.
fix: Fixed the xeno_bypass_timer gamemode flag skipping inactivity checks.
refactor: Refactored some of the join as xeno code inconsistencies and changed prompts to tgui_alert
spellcheck: Mentioned eggs when using join as facehugger verb.
/:cl: