Remove directives folder from .gitignore files for lit-html to avoid import error

[knuthaug]

In version 5.0.4 of @popeindustries/lit-html and @popeindustries/lit-html-server the directives folder, pointed to by the exports map config, was not included in the package, and the import could not be resolved, due to the fact that is is listed in .gitignore since it is generated. This aims to fix that.

Why it seemed to work while testing the previous branch by linking, I still do not know 😢

Fix

• Add empty .npmignore files to keep directives in npm package, but keep them in .gitgnore to keep them out of git.

ref: https://docs.npmjs.com/cli/v8/using-npm/developers#keeping-files-out-of-your-package

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: 9782cbc738a2b116ece1cc395651b04ac34953e7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

| Name | Type | | --------------------------- | ----- | | @popeindustries/lit-html | Patch | | @popeindustries/lit-element | Patch | | @popeindustries/lit | Patch |

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[knuthaug]

directives could probably be listed in files in package.json too, as an alternative. You decide what you prefer.