[advanced][databases] Add livedet-iris-2020

advanced/databases/livedet_iris_2020/1.json

+{
+    "description": "Livedet Iris 2020 test database",
+    "environment": {
+        "name": "Example databases",
+        "version": "1.4.1"
+    },
+    "protocols": [
+        {
+            "name": "Main",
+            "sets": [
+                {
+                    "name": "test",
+                    "outputs": {
+                        "category": "system/integer/1",
+                        "image": "system/array_2d_uint8/1",
+                        "label": "system/boolean/1"
+                    },
+                    "template": "iris_pad",
+                    "view": "Test"
+                }
+            ],
+            "template": "iris_pad"
+        }
+    ],
+    "root_folder": "/somewhere"
+}