fix: add types field in plugins package's

[corners2wall]

Closes #1896
Closes #1897
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Closes #1911

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[BeksOmega]

Hello! These issues are actually being saved for an event we're running called Grace Hopper Open Source Day! It is meant to help young girls and non-binary technologists make their first contributions to open source =)

We definitely appreciate the fix! But I'm going to go ahead and close this so that we can save the issues for the event.

If you still want to contribute we have some good help wanted issues that are open for contribution! Just make sure they're /not/ tagged with ghc-osd.