Added ignore missing package name to get-packages

[tzdesign]

Hi there,

we are also working with changesets, but in our current project there are packages that generate package.json files within the build process that do not have a name.

These files are used for module types like:

{
  "type": "module"
}

Unfortunately there is no way to ignore them, neither with you nor with changesets. I thought I'd do a PR, let me know if there's anything else I should change here.

When you release a new version, I will also make a PR in changesets project, so that you can pass on the value via the config.

Thanks in advance

[changeset-bot]

🦋 Changeset detected

Latest commit: 425b70e

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

This PR includes changesets to release 1 package

Name	Type
@manypkg/get-packages	Minor

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[tzdesign]

@emmatown who is in charge here?
In a few cases you have some valid package.json with no name for telling node a type.