Add tests and update refs.

Author: akshanshbhatt

tests/parser/type_comment1.py

@@ -2,4 +2,18 @@
 
 def ndarray_func(x):
     # type: (np.ndarray) -> np.ndarray
-    return x
+    return x
+
+@decorator1 # type: ignore
+
+# Comment
+
+@decorator2
+
+# Comment
+
+@decorator3 # type: ignore
+
+def test(x):
+    # type: (np.ndarray) -> np.ndarray
+    return x

tests/reference/ast_new-type_comment1-710ea6c.json

@@ -2,11 +2,11 @@
     "basename": "ast_new-type_comment1-710ea6c",
     "cmd": "lpython --show-ast --new-parser --no-color {infile} -o {outfile}",
     "infile": "tests/parser/type_comment1.py",
-    "infile_hash": "cdc0bdd0faec912e7f3db4e71c4a14aa281828e8b68faac91f5a78ee",
+    "infile_hash": "9c79bc041758b5401f4431a53b6b333999a4e7dfe9dfabac13d83178",
     "outfile": null,
     "outfile_hash": null,
     "stdout": "ast_new-type_comment1-710ea6c.stdout",
-    "stdout_hash": "98ccc7f80021238fff1a1a1395e64b5d2097f025e60e47821ec76fdb",
+    "stdout_hash": "c7019449158ebe30677a0808ad2fd8f93aebd2eee6cd90914c44cd98",
     "stderr": null,
     "stderr_hash": null,
     "returncode": 0

tests/reference/ast_new-type_comment1-710ea6c.stdout

@@ -1 +1 @@
-(Module [(Import [(pytest ())]) (FunctionDef ndarray_func ([] [(x () ())] [] [] [] [] []) [(Return (Name x Load))] [] () "(np.ndarray) -> np.ndarray")] [])
+(Module [(Import [(pytest ())]) (FunctionDef ndarray_func ([] [(x () ())] [] [] [] [] []) [(Return (Name x Load))] [] () "(np.ndarray) -> np.ndarray") (FunctionDef test ([] [(x () ())] [] [] [] [] []) [(Return (Name x Load))] [(Name decorator1 Load) (Name decorator2 Load) (Name decorator3 Load)] () "(np.ndarray) -> np.ndarray")] [(TypeIgnore 0 "") (TypeIgnore 0 "") (TypeIgnore 0 "")])