Add click_phase and priority fields to item_on_item power type

[eggohito]

This PR changes the click_type field, and adds the new click_phases and priority fields to the item_on_item power type:

Note

Powers with a priority value of equal or greater than 1 will be executed and override the original action of clicking an item stack with the cursor item stack, or clicking an item stack in a slot...

...while powers with a priority value of equal or less than -1 will only be executed if the original action of clicking an item stack with the cursor item stack, or clicking an item stack in a slot has failed (or if the item doesn't have any.)

Field	Type	Default	Description
click_types	Array of Click Types	["secondary"]	Determines whether the power should trigger when left-clicking ("primary"), right-clicking ("secondary"), or both, an item. (This is a replacement for the click_type field, but the power type still supports it.)
click_phases	Array of Stack Click Phases	"slot"	Determines the click phase at which the actions should be executed.
priority	Integer	0	Determines the execution priority of the power; powers are executed in the highest-to-lowest priority order.

---

A stack click phase is a string that determines the phase when clicking an item on a slot in inventories.

Note

The listed values are ordered based on priority, with "cursor" being first and "slot" being last.

Name	Description
"cursor"	Determines that the item stack held in the cursor is clicked to a slot.
"slot"	Determines that the item stack from a slot is being clicked.

---

Here's an example that overrides the action of placing item stacks in a bundle when using the bundle on an item stack:

{
    type: "apoli:item_on_item",
    using_item_condition: {
        type: "apoli:ingredient",
        ingredient: {
            item: "minecraft:bundle"
        }
    },
    on_item_condition: {
        type: "apoli:empty",
        inverted: true
    },
    entity_action: {
        type: "apoli:execute_command",
        command: "tellraw @s {\"text\": \"Cannot place an item in the held bundle!\", \"color\": \"red\"}"
    },
    click_type: "secondary",
    click_phases: [
        "cursor"
    ],
    priority: 1
}

And another example that would override the action of placing item stacks in a bundle when using an item stack on a bundle:

{
    type: "apoli:item_on_item",
    using_item_condition: {
        type: "apoli:empty",
        inverted: true
    },
    on_item_condition: {
        type: "apoli:ingredient",
        ingredient: {
            item: "minecraft:bundle"
        }
    },
    entity_action: {
        type: "apoli:execute_command",
        command: "tellraw @a {\"text\": \"Cannot put held item into a bundle!\", \"color\": \"red\"}"
    },
    click_type: "secondary",
    click_phases: [
        "slot"
    ],
    priority: 1
}