perf: Lazy-load public-api dependencies to reduce baseline memory usage (#5049)

* refactor: Load swagger and openapi dependencies conditionally

* disable public api in tests to reduce heal usage

* update the link and text in SettingsApiView when swagger ui is disabled

packages/cli/src/config/schema.ts

@@ -637,6 +637,14 @@ export const schema = {
 			env: 'N8N_PUBLIC_API_ENDPOINT',
 			doc: 'Path for the public api endpoints',
 		},
+		swaggerUi: {
+			disabled: {
+				format: Boolean,
+				default: false,
+				env: 'N8N_PUBLIC_API_SWAGGERUI_DISABLED',
+				doc: 'Whether to disable the Swagger UI for the Public API',
+			},
+		},
 	},
 
 	workflowTagsDisabled: {