feat(typescript): add neotest-jest support

[cristobalgvera]

📑 Description

In typescript pack, add support for neotest-jest if neotest is installed.

ℹ Additional Information

The usage of table#insert function allows to use the same pattern in other language packs without overriding the values (e.g.: use rustaceanvim integration for neotest in the same neovim configuration).

This usage was inspired from the rust language pack.

[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).

[cristobalgvera]

Thanks @mehalter, I'm busy today and would upload the changes at the afternoon.

[mehalter]

No worries! Just wanted to help get this through since it was a small change :) Thanks again! This was a great addition plus exposed bugs in other packs :D