Add AST JSON files for new documentation and scripts

- Created JSON representation for `collect-diagnostics.sh` including nodes and edges for its structure.
- Added JSON for `ops-restarts.md` detailing various sections and their relationships.
- Introduced JSON for `server-down-oom-diagnosis.md` capturing its content and connections.

graphify-out/.graphify_labels.json

@@ -703,27 +703,20 @@
   "701": "Community 701",
   "702": "Community 702",
   "703": "Community 703",
-  "704": "Community 704",
   "705": "Community 705",
   "706": "Community 706",
   "707": "Community 707",
   "708": "Community 708",
   "709": "Community 709",
   "710": "Community 710",
-  "711": "Community 711",
   "712": "Community 712",
-  "713": "Community 713",
-  "714": "Community 714",
   "715": "Community 715",
   "716": "Community 716",
   "717": "Community 717",
   "718": "Community 718",
   "719": "Community 719",
   "720": "Community 720",
-  "721": "Community 721",
   "722": "Community 722",
-  "723": "Community 723",
-  "724": "Community 724",
   "725": "Community 725",
   "726": "Community 726",
   "727": "Community 727",