Make danger check view changes (#391)

Make danger check view changes

Add a check that if a file with @Preview or @LargeHeightPreview
in it is changed, then the corresponding build file includes
the showkase processor.

Also change the check that prompts about screenshots to use
the same @Preview logic instead of checking for "/layout" in
the path which doesn't work with compose.

Also add missing showkase processors

appnav/build.gradle.kts

@@ -69,4 +69,6 @@ dependencies {
     testImplementation(projects.services.appnavstate.test)
     testImplementation(libs.test.appyx.junit)
     testImplementation(libs.test.arch.core)
+
+    ksp(libs.showkase.processor)
 }