Replacing the linter

[Jolanrensen]

Fixes https://github.com/Kotlin/dataframe/issues/364, the last stopper for updating to Kotlin 2.0.

• replaced kotlinter by jlleitschuh's ktlint plugin
• .editorconfig is used to set the rules of the linter and the code style
• Please use https://plugins.jetbrains.com/plugin/15057-ktlint from now on :)
• Individual cases can be @Suppress-ed easily with that plugin
• I mostly-automatically refactored the entire project, but I checked all changes
• I fixed some manual things: *-imports, names of consts, @file:ExcludeFromSources to prevent "empty" files in generated-sources
• Tests in samples/api are cleaned for now and ignored by ktlint on a per-file basis (@file:Suppress("ktlint"))
• See the issue for more information

[github-actions[bot]]

Generated sources will be updated after merging this PR. Please inspect the changes in here.