Show previews for JavaScript unicode escape sequences.
Configuration
js-unicode-preview.languages: An array of language ids to add the previews on. Defaults to ["javascript", "javascriptreact", "typescript", "typescriptreact"]
js-unicode-preview.inline: Boolean whether or not to show the previews inline. Defaults to true.
js-unicode-preview.hover: Boolean whether or not to show the previews on hover. Defaults to true.
