Update SBT/scala frameworks

[osopardo1]

Several things to do in the project regarding SBT and Scala frameworks.

• Right now we are using scalastyle to cover the style and productivity of the code. Seems like the project has not been updated for long and scalafix could be a better library to use in the project.
• Update plugins: delete the ones that are not used and update the versions.
• Sbt version: update the version of the SBT building tool to the last one.

[alexeiakimov]

Honestly I am not convinced because it seems the two tools have different purpose:

1. Scalafmt is more about the code format
2. Scalafix is more linter than formatter.
   According to https://github.com/scalameta/scalafmt the latest release 3.7.17 happened 2 weeks ago, so it does not look like abandoned.

Let's have a look from different angle, what is wrong with the current use of scalafmt? What functionality do we expect from such a tool and what is missing? For me personally the following features are essential

1. The tool enforces the same format for all the source files (it means that any custom manual formatting is always replaced with the automatic one)
2. The format operation is idempotent (it is important for the source control to avoid format-only changes)
3. The format operation can be called from the build tool like sbt (we should not rely on IDE to format the code properly)
4. The format enforced by the tool allows some customization, however the default format is good enough to be used out of the box (in other words the tool should not encourage us to invent our own format, instead it just allows to change a few parameters of the default one like the maximum line length).
5. The tool allows to check if the source code is formatted properly, the check operation should be available from the build tool like sbt (it is important for CI).

Ideally IDE can support the tool and the format defined in the project, however it is optional.

IMHO the current setup of scalafmt meets all the requirements above except 1. The problem is that it does not organize imports, it preserves the imports as they are defined by the programmer. In theory IDEA and Metals both respect scalafmt and can use it for the code formatting, again we should not rely on the IDE in general. I think we need investigate if the configuration of scalafmt can be improved to fix this issue.

Regarding the upgrade of sbt, I think that it makes sense.

[alexeiakimov]

I was thinking that the problem is with scalafmt, since the task is to replace scala-style with more modern scalafix, then it looks promising. Apologies.

[alexeiakimov]

The update is done for main-1.0.0. I suggest to close the issue.