Move to Kotlin 1.5.10 and Compose 0.4.0-rc1

ci/compose-uber-jar/gradle.properties

components/build.gradle.kts

examples/codeviewer/build.gradle.kts

examples/falling_balls/build.gradle.kts

examples/imageviewer/build.gradle.kts

...sktopMain/kotlin/example/imageviewer/utils/Application.kt

examples/intelliJPlugin/build.gradle.kts

examples/issues/build.gradle.kts

examples/widgetsgallery/build.gradle.kts

gradle-plugins/build.gradle.kts

...st/kotlin/org/jetbrains/compose/test/TestKotlinVersion.kt

gradle-plugins/gradle.properties

idea-plugin/build.gradle.kts

idea-plugin/examples/desktop-project/build.gradle.kts

templates/desktop-template/build.gradle.kts

templates/multiplatform-template/build.gradle.kts

tools/replace.sh

tutorials/Getting_Started/README.md