Dev/update 4 prep

[ShaneBeee]

Describe your changes

This PR outlines changes made in relation to Hytale's upcoming "Update 4"

Notes:

• Hytale has deprecated Inventory in favour of using InventoryComponents/ItemContainers
• Most of the changes here wont cause breaking changes

Temp Changelog:

REMOVED:

• Removed Inventory functions (they no longer work, Hytale removed the constructors)

DEPRECATED:

• Deprecated anything related to Inventory (Hytale is moving away from this)
• Inventory of entity expression now returns a combined (hotbar/storage) ItemContainer (kept this for backwards compatibility )

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Target Hytale Versions: any
Requirements: none
Related Issues: none

Checklist before requesting a review

• Tests have been added if necessary
• I have read the contributing guidelines