Refactor API Schema and validation

- /schema now returns full openapi/swagger schema
- That schema is used to validate incoming requests
- And used as a contract in future integration tests
- Moved route files up one level
- Fixed incorrect 404 reponses when getting objects
- Fixed saving new objects and passing jsonschemavalidation

backend/schema/paths/nginx/proxy-hosts/get.json

@@ -0,0 +1,65 @@
+{
+	"operationId": "getProxyHosts",
+	"summary": "Get all proxy hosts",
+	"tags": ["Proxy Hosts"],
+	"security": [
+		{
+			"BearerAuth": ["proxy_hosts"]
+		}
+	],
+	"parameters": [
+		{
+			"in": "query",
+			"name": "expand",
+			"description": "Expansions",
+			"schema": {
+				"type": "string",
+				"enum": ["access_list", "owner", "certificate"]
+			}
+		}
+	],
+	"responses": {
+		"200": {
+			"description": "200 response",
+			"content": {
+				"application/json": {
+					"examples": {
+						"default": {
+							"value": [
+								{
+									"id": 1,
+									"created_on": "2024-10-08T23:23:03.000Z",
+									"modified_on": "2024-10-08T23:23:04.000Z",
+									"owner_user_id": 1,
+									"domain_names": ["test.example.com"],
+									"forward_host": "127.0.0.1",
+									"forward_port": 8989,
+									"access_list_id": 0,
+									"certificate_id": 0,
+									"ssl_forced": 0,
+									"caching_enabled": 0,
+									"block_exploits": 0,
+									"advanced_config": "",
+									"meta": {
+										"nginx_online": true,
+										"nginx_err": null
+									},
+									"allow_websocket_upgrade": 0,
+									"http2_support": 0,
+									"forward_scheme": "http",
+									"enabled": 1,
+									"locations": null,
+									"hsts_enabled": 0,
+									"hsts_subdomains": 0
+								}
+							]
+						}
+					},
+					"schema": {
+						"$ref": "../../../components/proxy-host-list.json"
+					}
+				}
+			}
+		}
+	}
+}