Changeable Max Stack Size for Items and Inventory

[NotSoDelayed]

Description

This PR adds support of changeable max stack size of inventories and the recently introduced max stack size ItemMeta in Minecraft 1.20.5.

Javadocs:

• (ItemMeta) https://hub.spigotmc.org/javadocs/spigot/org/bukkit/inventory/meta/ItemMeta.html#setMaxStackSize(java.lang.Integer)
• (Inventory) https://hub.spigotmc.org/javadocs/spigot/org/bukkit/inventory/Inventory.html#setMaxStackSize(int)

Note

Using GitHub actions to test the attached test scripts due to Skript testing environment abruptly failing. My sincerely apologies for any bulk commits from fixing tests.

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Target Minecraft Versions: Minecraft 1.20.5 (changeable itemstack max stack size) Requirements: Spigot 1.20.5 (changeable max stack size ItemMeta) Related Issues: #5020 (inventory)

[cheeezburga]

Should this PR also include changes to the is stackable condition to properly reflect this new stuff?

[NotSoDelayed]

Should this PR also include changes to the is stackable condition to properly reflect this new stuff?

The condition checks if the max stack size is more than 1, which to me it looks like it is fine as is, unless I’m missing something.

[cheeezburga]

Should this PR also include changes to the is stackable condition to properly reflect this new stuff?

The condition checks if the max stack size is more than 1, which to me it looks like it is fine as is, unless I’m missing something.

Ye I have no idea what I was thinking when I looked at the condition earlier, looks so fine. Probably a result of no sleep tbh, my bad.

[NotSoDelayed]

Java 17 ready!