This PR:

• Adds inline code blocks and cleaned up / refactored Code Blocks in general
• Upgrades BlockNote
• Adds support for "plugins" and "settings"
• Adds a documentation page about plugins + example map plugin
• Additionally, it also makes it possible to read the current document from code blocks

Demo:

This is an overview of how plugins work:

• This work has also been presented at Live: https://www.youtube.com/watch?v=cBYudbaqHAk&t=24029s
• An early demo of the concept of Plugin Blocks is shared here: https://x.com/YousefED/status/1677342430545301504
• A very experimental demo of what can be accomplished by mixing document access and inline blocks can also be seen at the end of the Live demo (inspired by embark ):