[MoM] Various maintenance tasks

[Standing-Storm]

Summary

Mods "[MoM] Various maintenance tasks"

Purpose of change

Some things need to be fixed

Describe the solution

Standardizes formatting of powers.
Standardizes removal of toggled powers into discrete EoCs that can be called elsewhere.
As part of above, adds various hidden effects for tracking non-effect-based powers (like Chameleoflage or Banked Flames)
Rename Drain to "Nether-Attuned," remove all innate negative effects, and rework messages around it, to prepare for changes down the line (see comments on #69428 )
Add a couple possible positive effects from Nether-Attuned (Health increase, surge of power)
Link remaining scaling effects into Jmath instead of using individual formulae.
Fixes repeated messages when stopping concentration on toggled powers.
Adds missed powers to End Concentration
Remove Stamina debuff from maintained powers (losing concentration discourages over-maintenance much better)
Converts powers to ternary so channeling time is 1/10 of a second and cost is 0 when turning off concentration

Describe alternatives you've considered

Testing

It works.

Should be enough changes for one PR. I'll have another one converting more powers to maintenance soon enough.

Additional context