Future proofing: Rewrite implicit to Scala 3 replacements

[MateuszKowalewski]

Almost all implicits are gone:

The rest needs special care. I'll open issues.

The PR is divided in two commits for review:

• The 1st part (older commit) is imho all changes that don't need any further discussion.
• I'll annotate the 2nd part with some thoughts: Not sure whether some parts should be further improved before merging.

The commits only compile when applied together. So this is a WIP PR.

After review / discussion I'll rewrite it to one big single commit (with a better commit message).

[MateuszKowalewski]

Exactly!

Especially as I have a commit on top already waiting, rewriting all the imports to Scala 3 syntax… :smile:

[MateuszKowalewski]

Good job overall!

Thanks a lot!

It took a little bit longer than I've thought as there were some tricky parts to find, but all in all it was a good issue to look around the code.

[MateuszKowalewski]

I've done what we said (see the diff of the force push).

But I'm going to revert the removal of implicit classes in CoreLib. This breaks exactly the same as with the other implicit classes only that the extension methods / implicit class methods aren't called anywhere.

Looks like missed test coverage. (I'll open an issue).

[TomasMikula]

Thanks again for this!