feat: is able to call a script from a project

examples/project/forest.kdl

@@ -26,11 +26,8 @@ project {
 		output "output/"
 	}
 
-	scripts type=shell {
-		path "scripts/"
-		actions {
-			build
-		}
+	scripts {
+		hello type=shell {}
 	}
 }
 

examples/project/scripts/hello.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env zsh
+
+set -e
+
+echo "hello world"