Updated README.md with new video thumbnail, and simplified text, added spoiler to install instructions

Updating README.md, renaming COPYING to LICENSE.md (replacing with markdown version of GPLv3), updating screenshots to owlmaddie versions.

- Removing example mixins (from Fabric starter project)
- Replacing old screenshots
- Added Discord invite link to README

- Added player face to player chat bubbles
- Added placeholder player text-top UI graphic (no friendship)
- Reduced ticks visible per page of player messages
- Changed PlayerMessage to extend EntityChatData, for simplicity

- Added new keyboard icon - owlmaddie art, as a chat bubble at the end of a chat message
- Removed ChatStatus.END, and replaced the logic with isEndOfMessage() function

- Drawing dynamic friendship status on chat bubble.
- Removing friendship status from text bubble backgrounds

Update UI to newest artwork from owlmaddie. Update some X,Y coordinates since a few images changes sizes and locations.

- New method to retrieve and use an Entity Renderer to return the texture path associated with it
- Large refactor of entity texture folders and file names to match the Minecraft texture paths.

Updating README.md to use ChattyCraft name (experimenting), added screenshots, added GPLv3 details, updated icon.png

Draw entity custom name above chat bubble / icons. Also, modified the chat bubble graphic to remove "X" icon.

Prevent spamming of chat generation. Introduced chat status, and now render dotdot button when chat is pending.

- Removing old mod textures, and static loading
- Dynamic loading of textures now working

Initial proof of concept changes to Fabric Minecraft example mod. Generate 1 random ChatGPT prompt, display it above all Living Entities.