Add test case for indented comment at the end of a function body

Close #156

Author: NathanLovato

tests/expected/comments_indentation.gd

@@ -8,3 +8,13 @@ func test() -> void:
 
 func test2():
 	pass # This comment should stay here too
+
+
+func test3() -> void:
+	print("Test")
+	# This comment should stay at the end of the function
+
+
+# This comment should stay above the function
+func test4() -> void:
+	print("Test")

tests/input/comments_indentation.gd

@@ -7,3 +7,11 @@ func test() -> void:
 
 func test2():
 	pass # This comment should stay here too
+
+func test3() -> void:
+	print("Test")
+	# This comment should stay at the end of the function
+
+# This comment should stay above the function
+func test4() -> void:
+	print("Test")