feat(pack): add prettier pack

[azdanov]

Issue #1501

📑 Description

Extracted prettier into separate pack. I'm wondering if I should add support for other languages like html, css, yaml, json etc. Maybe via vim.g.prettier.format_filetypes?

Still need to test it with null_ls and conform to see that it performs similar as before.

ℹ Additional Information

[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)

• Entry returns a single plugin spec with the new plugin as the only top level spec (not applicable for recipes or packs).

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

• Proper usage of specs table for all specs that are not dependencies of a given plugin (not applicable for recipes or packs).

[Uzaaft]

Have you tested it, per the comment you wrote in the PR desc? @azdanov

[azdanov]

I've tried both conform and none-ls. Seems to be working, not sure why it was so complicated before. Now it should use the defaults from each plugin:

• https://github.com/stevearc/conform.nvim/blob/master/lua/conform/formatters/prettierd.lua#L5
• https://github.com/nvimtools/none-ls.nvim/blob/main/lua/null-ls/builtins/formatting/prettierd.lua#L39

Not sure about none-ls fully, since it doesn't have explicit true/false check 🤷‍♂️

@Uzaaft What do you think?

EDIT: none-ls uses this under the hood: https://github.com/nvimtools/none-ls.nvim/blob/main/lua/null-ls/utils/cosmiconfig.lua

So all looks golden to me