[Ingest] Agent Config create with sys monitoring (#60111)

* Enable Switch for Collecting sys metrics on create form/flyout
* Add support for sys monitoring to `sendCreateAgentConfig()` (FE)
* Added `query` param to create Agent Config API schema and handler
* Create System datasource support in Create Agent config API handler

x-pack/plugins/ingest_manager/common/services/index.ts

@@ -6,6 +6,6 @@
 import * as AgentStatusKueryHelper from './agent_status';
 
 export * from './routes';
-export { packageToConfigDatasourceInputs } from './package_to_config';
+export { packageToConfigDatasourceInputs, packageToConfigDatasource } from './package_to_config';
 export { storedDatasourceToAgentDatasource } from './datasource_to_agent_datasource';
 export { AgentStatusKueryHelper };