[Enhancement] Add random option in cast trigger

[goflishMC]

Icon Key:
Counts as Cast: true/false
#If true, each time this is called it would cast a skill from the list at random
random: true/false
#If only one skill listed, then that skill will cast each time this mechanic is called
Skills: list of skills

[funaydmc]

Trigger: Skill Cast

• Icon Key: String
• Counts as Cast: true/false
• Cast mode: First/All/Random // Looks got it, yeah :>
• Force cast: true/false // if true, skill will cast regardless of whether it is available or not (as long as it exists).
• Skills: List // <skill name>[:<level>]