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]

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

I'll test run it again next week at work to make sure nothing breaks during daily usage. I did test it when creating the PR, but maybe things changed or I missed something, since I don't use null-ls at all.

[azdanov]

@Uzaaft I've tested it all day, no issues running it with none-ls.