Add private network posture check (#1606)

* wip: Add PrivateNetworkCheck checks interface implementation

* use generic CheckAction constant

* Add private network check to posture checks

* Fix copy function target in posture checks

* Add network check functionality to posture package

* regenerate the openapi specs

* Update Posture Check actions in test file

* Remove unused function

* Refactor network address handling in PrivateNetworkCheck

* Refactor Prefixes to Ranges in private network checks

* Implement private network checks in posture checks handler tests

* Add test for check copy

* Add gorm serializer for network range

management/server/http/api/openapi.yml

@@ -862,6 +862,8 @@ components:
           $ref: '#/components/schemas/OSVersionCheck'
         geo_location_check:
           $ref: '#/components/schemas/GeoLocationCheck'
+        private_network_check:
+          $ref: '#/components/schemas/PrivateNetworkCheck'
     NBVersionCheck:
       description: Posture check for the version of NetBird
       type: object
@@ -932,6 +934,24 @@ components:
       required:
         - locations
         - action
+    PrivateNetworkCheck:
+      description: Posture check for allow or deny private network
+      type: object
+      properties:
+        ranges:
+          description: List of private network ranges in CIDR notation
+          type: array
+          items:
+            type: string
+            example: ["192.168.1.0/24", "10.0.0.0/8"]
+        action:
+          description: Action to take upon policy match
+          type: string
+          enum: [ "allow", "deny" ]
+          example: "allow"
+      required:
+        - ranges
+        - action
     Location:
       description: Describe geographical location information
       type: object