new: [rmm] new object template to share RMM agent details

Based on a request from @rommelfs

objects/rmm/definition.json

@@ -0,0 +1,78 @@
+{
+  "attributes": {
+    "comment": {
+      "description": "A description of the RMM.",
+      "misp-attribute": "comment",
+      "ui-priority": 0
+    },
+    "guid": {
+      "description": "GUID or reference of the RMM agent.",
+      "misp-attribute": "link",
+      "ui-priority": 0
+    },
+    "hostname": {
+      "description": "hostname of the control server for the RMM agent.",
+      "misp-attribute": "hostname",
+      "ui-priority": 0
+    },
+    "name": {
+      "description": "Name of the RMM agent.",
+      "misp-attribute": "text",
+      "ui-priority": 0
+    },
+    "rmm-type": {
+      "description": "Type of the RMM agent described.",
+      "disable_correlation": true,
+      "misp-attribute": "text",
+      "sane_default": [
+        "AnyDesk",
+        "Atera",
+        "ASG",
+        "BeAnywhere",
+        "Domotz",
+        "DWservice",
+        "Fixme.it",
+        "Fleetdeck.io",
+        "GetScreen",
+        "Itarian",
+        "Level.io",
+        "Logmein",
+        "ManageEngine",
+        "N-Able",
+        "Pulseway",
+        "RattyRat",
+        "Rport",
+        "Rsocx",
+        "RustDesk",
+        "RustScan",
+        "ScreenConnect",
+        "Splashtop",
+        "SSH",
+        "Teamviewer",
+        "TightVNC",
+        "TrendMicro",
+        "Sorillus",
+        "Xeox",
+        "ZeroTier"
+      ],
+      "ui-priority": 0
+    },
+    "url": {
+      "description": "url of the control server for the RMM agent.",
+      "misp-attribute": "url",
+      "ui-priority": 0
+    }
+  },
+  "description": "An object describing a RMM agent.",
+  "meta-category": "misc",
+  "name": "rmm",
+  "requiredOneOf": [
+    "common",
+    "rmm-type",
+    "guid",
+    "url",
+    "hostname"
+  ],
+  "uuid": "2cdcfb2a-dd74-4d88-ae02-6f381b312666",
+  "version": 1
+}