Add compose ktlint rules, fix issues

[rock3r]

We need to add the ktlint Compose ruleset as things are slipping through Detect. We also have to address new warnings that come up with the new ruleset.

[hamen]

We will monitor Spotless releases until they include the fix for ktfmt we need 🤞

[rock3r]

Notes on this:

• We want to use ktfmt for formatting because it's more deterministic
• We still want to keep ktlint for warnings and checks — same as detekt
• We want to include the Compose ktlint ruleset, too
• We need to test drive the IJ plugin (Spotless Gradle) to handle formatting properly
  • We should look into Spotless Applier, too, because it seems more flexible and has more features. It's also actively maintained, contrary to Spotless Gradle.

[rock3r]

More notes: we should consider straight-up ktfmt for formatting, and maybe forking the ktlint plugin to fix its useless, constant nags, and properly support external rulesets.