Add PEARL ZX-5816 fingerbot support

tests/test_devices.py

@@ -20,6 +20,14 @@ def test_fingerbot_plus_szjqr_map():
     assert dps.mode == 8
 
 
+def test_pearl_zx5816_map():
+    dps = dp_map_for("knp8dybt")
+    assert dps.click == 1
+    assert dps.switch == 1
+    assert dps.mode == 2
+    assert dps.hold_time == 3
+
+
 def test_unknown_product_raises():
     with pytest.raises(ValueError):
         dp_map_for("nope")