Implementation of onExpire system and New Ui Elements for Thresholds

[Dubledice]

PR to Parent Branch

Commits summarized:

Addition of onExpire effect system, allowing for effects to be applied to the player when a prior effect ends.
Addition of Ui elements to support threshold effects, giving players a tracker to see when they hit their threshold breakpoint.
Cleaned up useless comments

General:

All new systems should be datapack-friendly.
Includes changes from my first and second PR request so + and - are inflated. <- New stuff starts here: onExpire + Ui Implementation

[SaloEater]

I don't know what's the right decision, but if I were the owner, I would ask Dice to rewrite this PR.

Main change would be adding a new field List<ComponentPart> on_expire inside of ExileEffect class and execute these parts with already written code.
That way would be achieved several goals:

1. Making PR lighter by reusing existing code and logic
2. Making exile effects more flexible by using various SpellAction

This would bring us to generic exile effect:

{
  "id": "parent_effect",
  "max_stacks": 1,
  "mc_stats": [],
  "one_of_a_kind_id": "",
  "on_expire": [
    {
      "acts": [
          {
            "type": "exile_effect",
            "map": {
              "count": 1.0,
              "exile_potion_id": "child_effect",
              "potion_action": "GIVE_STACKS",
              "potion_dur": 20.0
            }
          }
        ],
        "en_preds": [
          //array of EffectCondition
        ],
        "ifs": [
          //array of EffectCondition
        ],
        "targets": [
          //array of BaseTargetSelector
        ]
    }
  ],
  "tags": {
  }
}