Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

public/api/openapi.json

@@ -5,12 +5,8 @@
     "version": "1.0.0",
     "description": "Public and administrative REST API for the AtomCMS-Next Habbo retro hotel CMS."
   },
-  "servers": [
-    { "url": "/api", "description": "Local API" }
-  ],
-  "security": [
-    { "bearerAuth": [], "sessionAuth": [] }
-  ],
+  "servers": [{ "url": "/api", "description": "Local API" }],
+  "security": [{ "bearerAuth": [], "sessionAuth": [] }],
   "components": {
     "securitySchemes": {
       "bearerAuth": {
@@ -54,7 +50,11 @@
         "responses": {
           "200": {
             "description": "Online count",
-            "content": { "application/json": { "schema": { "type": "object", "properties": { "count": { "type": "integer" } } } } }
+            "content": {
+              "application/json": {
+                "schema": { "type": "object", "properties": { "count": { "type": "integer" } } }
+              }
+            }
           }
         }
       }