Adds generic idetools api test case.

At the moment three lines of the test case fail in proc mode.

tests/caas/idetools_api.nim

@@ -0,0 +1,23 @@
+import unicode, sequtils
+
+proc test_enums() =
+  var o: Tfile
+  if o.open("files " & "test.txt", fmWrite):
+    o.write("test")
+    o.close()
+
+proc test_iterators(filename = "tests.nim") =
+  let
+    input = readFile(filename)
+    letters = toSeq(runes(string(input)))
+  for letter in letters: echo int(letter)
+
+const SOME_SEQUENCE = @[1, 2]
+type
+  bad_string = distinct string
+  TPerson = object of TObject
+    name*: bad_string
+    age: int
+
+proc adder(a, b: int): int =
+  result = a + b