Overhaul printed_page Rendering and behavior

[TheBiochemic]

Changes & Additions

• Added First person & UI Artwork for Bound pages, Newspaper, Book, Code page, Construction page
• Added special handling for author and title NBT String (same as Minecraft Book)
• Added special behavior when holding printed_page and having the GuiPrintedPage open.
• Added first person render & custom UI for Newspaper, Code page, Construction page, Bound pages
• Reverted default rendering behavior for Book and Blank page and Letter
• Changed Letter to not have UI and instead open on right-click
• Added Opened Letter, which is a single page Container (using text NBT for content, and optional type for page type)
• Implemented multi-page rendering in UI and first person
• Item variants with multiple pages now store the pages the same way as the Minecraft book (pages NBT List, with tag + type Compound for each page), with additional type for the content type (as defined in the PageType enum)
• the Blank page now has the paper Ore Dictionary tag

Bug fixes

• Fixes caching Hand Rendering switching between printed_page variants
• Fixes re-caching for printed_page in Main hand & Offhand.
• Fixes [Adjustment] Custom book 1st person texture/model #487

To Do

• Need to test and potentially fix changes for Multiplayer it seems to just work
• Need to add Translations for the Opened Letter
• Check for missing entries

Additional notes

For testing put that into a command block and activate it:
Newspaper (for book use meta value 7, for bound pages meta 5):

/give @p immersiveintelligence:printed_page 1 6 {"author":"Boulevard News","title":"News Issue No. 43","pages":[{"text":"the first page, as you see is a code page<br>it supports all the usual shenanigans","type":"CODE"},{"text":"Here is some more text, but on a regular page", "type":"TEXT"},{"text":"the third page is on the right on the newspaper, then you need to flip the page","type":"BLUEPRINT"},{"text":"this is on the second side of the newspaper, as you can see","type":"TEXT"}]}

Letter (meta 1, 2, 3 for the regular pages, without type NBT value, since it's implied by it's page type):

/give @p immersiveintelligence:printed_page 1 8 {"author":"your friend","title":"to This user", "text":"it contains some secret message, that is not visible, until you open the letter.", "type":"TEXT"}

[Pabilo8]

Excellent work. The new textures look amazing.