feat(media): add image.nvim

[belafonte]

I recently came across this nvim plugin:
https://github.com/3rd/image.nvim

Which can display images in astronvim via kittys image protocol, which is neat!
Works very well and also prevents astronvim from crashing when opening images :).

It has some requirements, so it does not work out of the box though.
I have only tested it with kitty.

Happy to discuss it or change something if it seems wrong.

[github-actions]

Review Checklist

Does this PR follow the [Contribution Guidelines](development guidelines)? Following is a partial checklist:

Proper conventional commit scoping:

• If you are adding a new plugin, the scope would be the name of the category it is being added into. ex. feat(utility): added noice.nvim plugin

• If you are modifying a pre-existing plugin or pack, the scope would be the name of the plugin folder. ex. fix(noice-nvim): fix LSP handler error

• Pull request title has the appropriate conventional commit type and scope where the scope is the name of the pre-existing directory in the project as described above

• README is properly formatted and uses fenced in links with <url> unless they are inside a [title](url)

• Proper usage of opts table rather than setting things up with the config function.

[Uzaaft]

This might require some changes in the future but seems good to go for now.