Save ktlint rules to project

[KevinSchildhorn]

• Adding .editorConfig file for ktlint formatting
• Updating KtLint gradle plugin to latest, and updating the ktlint version it's using.
• Running KtLint

[KevinSchildhorn]

MainActivity.kt:47:22 Super type should start on a newline (standard:class-signature) I'm not sure how to disable this rule.

I want it to be
class MainActivity : ComponentActivity(), KoinComponent
but it ends up being

class MainActivity :
    ComponentActivity(),
    KoinComponent

when formatting