Added simple test script for whether a model compiles or not

scripts/test_model_compile.py

@@ -0,0 +1,4 @@
+import sys
+sys.path.append("interface/HUTN/")
+from hutn_compiler.compiler import main as compile_code
+print(compile_code(sys.argv[1], "interface/HUTN/grammars/modelling.g", "M", []))