remove RequesterFactory

src/main/kotlin/fr/postgresjson/definition/Resource.kt

@@ -4,7 +4,7 @@ import java.io.File
 import java.net.URL
 import java.nio.file.Path
 
-interface Resource {
+sealed interface Resource {
     val name: String
     val script: String
     var source: Path?
@@ -34,7 +34,3 @@ interface Resource {
             }
     }
 }
-
-interface ResourceCollection {
-    val parameters: List<Parameter>
-}