[lua] mobMagicalMove Clean Up + Alpha Multiplier Support.

[UmeboshiXI]

I affirm:

• I understand that if I do not agree to the following points by completing the checkboxes my PR will be ignored.
• I understand I should leave resolving conversations to the LandSandBoat team so that reviewers won't miss what was said.
• I have read and understood the Contributing Guide and the Code of Conduct.
• I have tested my code and the things my code has changed since the last commit in the PR and will test after any later commits.

What does this pull request do?

1. Converts mobMagicalMove params to use the same system that exists for physical mobskills.
2. Removes some enums in mobskills.lua that were flagged for removal.
3. Migrates alpha calculation to xi.combat.physical and applies it within xi.combat.physical.calculateWSC().

• Alpha will be 1 if USE_ADOULIN_WEAPON_SKILL_CHANGES is set to true.
• If USE_ADOULIN_WEAPON_SKILL_CHANGES is false, then the alpha level scaling will be applied to wSC multipliers.

Steps to test these changes

• You should observe no changes other than support for mobskills to use alpha multipliers when USE_ADOULIN_WEAPON_SKILL_CHANGES is set to false.

1. Add a wSC mod to a mobskill or simply use a weaponskill.
2. Have a mob use mobskills or use a weaponskill, see no errors and see that they still do damage.
3. Turn USE_ADOULIN_WEAPON_SKILL_CHANGES to false in settings and restart server.
4. Repeat step 1/2. See that the skill will now do lower damage since the wSC mods are being lowered by alpha.

[UmeboshiXI]

Going to make some adjustments after thinking about this more.

Update: Eliminated mobskill params relating to alpha. Made it so if an wSC param exists on a weaponskill/mobskill, then it will automatically apply alpha if applicable when wSCs are being calculated.