Add rotate pipe

[TheDelta]

Checklist

• read and understood the contributing guidelines
• updated tests
• updated documentation (skipped, all pipes must be documented later on)
• npm run build and npm test passes

Affected core subsystem(s)
core

Description of change
Added a basic rotate pipe (https://sharp.pixelplumbing.com/api-operation#rotate) because images (from Smartphone for example) will loose rotation information due to compress. In order to fix this, a rotate will be made before which takes the EXIF data into account if no arguments are provided. (see https://stackoverflow.com/questions/48716266/sharp-image-library-rotates-image-when-resizing)

It was a copy paste from the resize pipe, but it does it's job nicely.
Eventually in the future it would be great to offer an advanced pipe, which exposes a sharp instance and allows to chain multiple sharp operations together. ;)

@MarcusCemes is this sharp.concurrency(1); needed in each core pipe at the top? Is this used because ipp already exposes it's own concurrency?

[TheDelta]

@MarcusCemes does this look fine to you?
Should there be maybe a generic pipe which exposes sharp to allow more advanced steps?

I did only test with with TypeScript / CLI. The rotate pipe should work with yaml / json fine tough.

Also this:

@MarcusCemes is this sharp.concurrency(1); needed in each core pipe at the top? Is this used because ipp already exposes it's own concurrency?