Add test asserting that malformed TSCs do not compile

[dominikmaeckel]

Use for example https://kotest.io/docs/assertions/compiler-matchers.html

E.g.

leaf("leaf_root") {
  any("any_wrong") { }
}

should not compile

[tillschallau]

tschuchortdev/kotlin-compile-testing#302

[dominikmaeckel]

Pretty much impossible since the project has to be built using Gradle to include all references.