Rename products to avoid collisions if used with swift-png

[valeriyvan]

Solves #4

[tayloraswift]

looks like CI product names were not updated

[valeriyvan]

looks like CI product names were not updated

fixed

[tayloraswift]

the tests in https://github.com/kelvin13/jpeg/tree/master/utils also need to be updated:

https://github.com/kelvin13/jpeg/actions/runs/3043428379/jobs/4902682333#step:4:3063

[valeriyvan]

the tests in https://github.com/kelvin13/jpeg/tree/master/utils also need to be updated:

https://github.com/kelvin13/jpeg/actions/runs/3043428379/jobs/4902682333#step:4:3063

Fixed. All tests succeed locally.

[tayloraswift]

ugh, it looks like testing scripts are using the product names to generate paths to the examples in https://github.com/kelvin13/jpeg/tree/master/examples

[valeriyvan]

ugh, it looks like testing scripts are using the product names to generate paths to the examples in https://github.com/kelvin13/jpeg/tree/master/examples

checked all tests. all work.

• JPEG-unit-test works fine in debug configuration but doesn't compile in release because of @testable import JPEG. Because it is not test target.

• JPEG-comparator crashes because of devision by 0, but it's not related to PR.

@tayloraswift Could you please review and merge. Then I could make PR for #12.

[adam-rocska]

it'd be great to have this fix. It's a real pain in the ass :(

[valeriyvan]

Both swift-png and jpeg packages could be used together if module aliasing is used for one of packages like in this PR. So this PR is not needed anymore.