Support Isolated Projects

[agrosner]

Isolated Projects

Project cannot compile due to this error:

org.gradle.api.InvalidUserCodeException: Project ':some-project' cannot dynamically look up a property in the parent project ':'
	at org.gradle.api.internal.project.DefaultProject.getProperties(DefaultProject.java:1231)
	at app.cash.paparazzi.gradle.PaparazziPlugin$setupPaparazzi$1.invoke$lambda$38(PaparazziPlugin.kt:215)
	at app.cash.paparazzi.gradle.PaparazziPlugin$setupPaparazzi$1.invoke$lambda$39(PaparazziPlugin.kt:198)

my guess is with this line:

test.systemProperties.putAll(project.properties.filterKeys { it.startsWith("app.cash.paparazzi") })