feat(obsidian): add property frontmatter commands

- Expose Obsidian CLI property commands via the n8n Obsidian API node
- Add a new Property resource with operations: Set, Read, Remove, List
- Implement correct args mapping for property:set/property:read/property:remove/properties
- Return raw CLI stdout for property read/list for easier downstream parsing
- Update node README with frontmatter/property usage examples
- Bump package version to 0.2.5

packages/n8n-nodes-obsidian-api/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "n8n-nodes-obsidian-cli-api",
-  "version": "0.2.4",
+  "version": "0.2.5",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "n8n-nodes-obsidian-cli-api",
-      "version": "0.2.4",
+      "version": "0.2.5",
       "license": "MIT",
       "devDependencies": {
         "@types/node": "^24.0.0",