Add separate APL Validation Warnings for each APL Value

[raethkcj]

Adds the ability to attach validation warnings to individual APL Values that trigger them, rather than attaching them all to the parent Action.

Does this by assigning a UUID to each APLValue that matches its input's CSS ID, which gets sent to the backend, validated, and returned to the frontend with warnings if they exist.

Seemed like less traffic then putting the warnings themselves in APLValues and returning the whole APLRotation 🤷

TODO

• Audit existing APLValue ValidationWarnings and decide whether each should move to this system
• Pass the parent AuraSet value to APLValueTrinketStatProcCheck so it can warn appropriately
• Consider renaming Warnings to Messages, and adding a log-level-ish enum to them to label as Warning, Info, etc. and display them with a different icon+message on the frontend