added simple example without typedefs

examples/simple/notypes.lc

+sample int AnInt;
+
+sample struct {
+  int x;
+  string s;
+} IntString;
+
+sample struct {
+  double x;
+  double y;
+} TwoDoubles;
+
+sample struct {
+  int fixed[2];
+  int variable[2,_];
+} TwoArrays;
+
+sample struct {
+  int a[2];
+  int b[2,3];
+} TwoFixedArrays;
+