Add Linux Ozone fyi compile-only bot

scripts/slave/gatekeeper.json

 {
   "comment": ["This is a configuration file for gatekeeper_ng.py",
               "Look at that for documentation on this file's format."],
 
   "masters": {
     "https://build.chromium.org/p/chromium": [
       {
         "categories": [
           "chromium_tree_closer"
         ],
@@ skipping 761 matching lines @@
           "WebKit Linux - TraceWrappables": {
             "tree_notify": [
               "hlopko@chromium.org",
               "mlippautz@chromium.org"
             ],
             "forgive_all": "true",
             "closing_optional": [
               "webkit_tests"
             ]
           },
+          "Ozone Linux": {
+            "tree_notify": [
+              "thomasanderson@chromium.org",
+              "rjkroege@chromium.org",
+              "fwang@igalia.com",
+              "tonikitoo@igalia.com",
+              "joone.hur@intel.com"
+            ],
+            "forgiving_optional": [
+              "*"
+            ]
+          },
           "Site Isolation Android": {
             "tree_notify": [
               "nasko+fyi-bots@chromium.org",
               "creis+fyi-bots@chromium.org",
               "lukasza+fyi-bots@chromium.org",
               "alexmos+fyi-bots@chromium.org"
             ],
             "forgiving_optional": [
               "*"
             ]
@@ skipping 237 matching lines @@
         "cleanup_temp",
         "taskkill"
       ],
       "closing_optional": [
         "compile",
         "gn"
       ]
     }
   }
 }