add unity test for automatic clustering and max fanout set

Signed-off-by: arthurjolo <[email protected]>

Author: arthurjolo

src/cts/test/CMakeLists.txt

@@ -21,6 +21,7 @@ or_integration_tests(
     check_charBuf
     check_max_fanout1
     check_max_fanout2
+    check_max_fanout3
     check_wire_rc_cts
     dummy_load
     find_clock