move some things from targettest to samples

samples/apple2/hgrtest.c

@@ -0,0 +1,26 @@
+// cl65 -t apple2 -C apple2-hgr.cfg hgrtest.c werner.s
+
+#include <tgi.h>
+#include <conio.h>
+
+#pragma code-name (push, "LOWCODE")
+
+void say (const char* text)
+{
+    tgi_setcolor (TGI_COLOR_BLACK);
+    tgi_outtextxy (41, 33, text);
+}
+
+#pragma code-name (pop)
+
+void main (void)
+{
+    tgi_install (a2_hi_tgi);
+    tgi_init ();
+    cgetc ();
+
+    say ("Hi Dude !");
+    cgetc ();
+
+    tgi_uninstall ();
+}