fix(typing): Allows all busboy options on plugin registration

[johaven]

Checklist

• [x] run npm run test and npm run benchmark
• [ ] tests and/or benchmarks are included
• [ ] documentation is changed or added
• [x] commit message and code follows the Developer's Certification of Origin and the Code of conduct

Fix Options like preservePath are not known

[johaven]

Can you add a test using tsd?

done :)

[johaven]

The linter seems to be broken :/

[mcollina]

Here is a PR that fixes linting https://github.com/fastify/fastify-multipart/pull/538

[mcollina]

Can you please rebase your PR?

[mcollina]

@gurgunday ptal