style: avoid using star imports

[nielspardon]

This makes it easier to understand which types/constants/methods are actually used in the code.

[bestbeforetoday]

The latest version of the Spotless plugin has a removeWildcardImports() step. Probably this change should include adoption of that Spotless capability; otherwise later changes will just end up regressing these changes and/or adding more wildcard imports.

[nielspardon]

The latest version of the Spotless plugin has a removeWildcardImports() step. Probably this change should include adoption of that Spotless capability; otherwise later changes will just end up regressing these changes and/or adding more wildcard imports.

Good catch. I wasn't aware they had this now in Spotless.

[nielspardon]

I rebased on latest main and pushed an additional commit upgrading spotless and enabling the removeWildcardImports option. The Spotless update did trigger some reformatting of existing code.

[bestbeforetoday]

This change looks good to me.

It would be nice to figure out if we will proceed with #433 before merging this since it will introduce a fourth round of merge conflicts with that PR.

[vbarua]

I've updated these in the past as I've seen them, so it's great that we can just enforce this via Spotless.