JS: add wrapper methods for the ADDED, GENERATED and REGISTERED flags
JS: add wrapper methods for the ADDED, GENERATED and REGISTERED flags

Signed-off-by: Harvey Harrison <eadbd6b462bf3c97df0300a934c12bc2e5d1fe51@gmail.com>

jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim,jaamsim/jaamsim