add: missing timesketch-timeline object template

objects/timesketch-timeline/definition.json

@@ -0,0 +1,33 @@
+{
+  "requiredOneOf": [
+    "message",
+    "datetime"
+  ],
+  "attributes": {
+    "message": {
+      "description": "Informative message of the event",
+      "ui-priority": 0,
+      "misp-attribute": "text"
+    },
+    "timestamp": {
+      "description": "When the log entry was seen in microseconds since Unix epoch",
+      "ui-priority": 0,
+      "misp-attribute": "timestamp-microsec"
+    },
+    "timestamp_desc": {
+      "description": "Text explaining what type of timestamp is it",
+      "ui-priority": 0,
+      "misp-attribute": "text"
+    },
+    "datetime": {
+      "description": "When the log entry was seen",
+      "ui-priority": 0,
+      "misp-attribute": "datetime"
+    }
+  },
+  "version": 2,
+  "description": "A timesketch timeline object based on mandatory field in timesketch to describe a log entry.",
+  "meta-category": "misc",
+  "uuid": "06db0221-cbc0-4ffc-ad98-7f34549310f1",
+  "name": "timesketch-timeline"
+}