add webp mimetype

[roelmonnens]

Q	A
Bug fix?	yes
New feature?	no
BC breaks?	no
Deprecations?	no
Related tickets	/
Documentation	/
License	MIT

What's in this PR?

This adds the mimetype webp to src/ApacheMimetypeHelper.php

Why?

This is used to create a proxy between front and back-end system.
When uploading webp files via this proxy the mimetype isn't passed on.

[dbu]

thanks. i will tag a release for this.

for your architecture, i wonder if you can't copy the mime type from the request? there might be other extensions we don't handle (looking at the linked apache list there are a lot of extensions not covered).
the user supplied mime type can be wrong, but the file extension can be wrong too.

[dbu]

https://github.com/php-http/multipart-stream-builder/releases/tag/1.3.1

[roelmonnens]

Thnx, this is a quick fix. We are checking how we can avoid this in the future with other unknown mimetypes.

[dbu]

it definitely belongs into the bundle, thats why i merged and tagged it.

but imho a proxy should forward the header and not determine the mime type on its own. but of course you are free to use this as you want.

we could sync more types from apache, but also i think it would make sense to make the mapping extensible for the user of the library somehow. (then your quickfix would not depend on somebody merging and releasing a pull request in an OS project)