tintamptest: Add test to detect |peak output| > 1
tintamptest: Add test to detect |peak output| > 1

Signed-off-by: Daniel Thompson <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@redfelineninja.org.uk>

daniel-thompson/tintamp,daniel-thompson/tintamp,daniel-thompson/tintamp