chore: Update to Next14

[VaniaPopovic]

• Updates this repo to use Nextjs 14
• Removes workaround for prisma as it is fixed now - https://github.com/prisma/prisma/issues/16117
• Adds workaround for Image component in mdx files for next after 13.5 as suggested in https://github.com/hashicorp/next-mdx-remote/issues/405
• Bumps all dependancies except a few content layer /mdx ones
• Replaces deprecated domains in next.config.js and with remote domains
• Moves themeColour in viewport rather than metadata ( change in next14)

Closes: https://github.com/shadcn-ui/taxonomy/issues/251 https://github.com/shadcn-ui/taxonomy/issues/192

[IsaacCDHall]

Thank you