* optimize saga config reuse

* upd-test

* Modularize SagaConfig into independent configuration structure

* feat: new feature for service discovery

1.Completed the code for organizing the workflow.
2.Implemented FileRegistryService based on local configuration files.

* style: go imports

* refactor: avoid the uncertainty of SQL field order in unit test.

refactor select_for_update_executor_test.go to avoid the uncertainty of SQL field order causing test code to pass and fail sometimes.

* fix xa branch commit bug

* feat: add xa

* reactor: select for update executor

* optimize the datasource init

* fix bug

* temporary not supported connection-num

* bugfix: repair init getty failed

* use undo config

* apply getty config

fix undo config

* feat: add rm config

* add transport config

* refactor: use new tm config in tm module.

* refactor at executor

* OPT rm client

* fix code style

* fix lint

add getty config

feat(pkg/client,pkg/config): add tm config

* add tcc fence config logic

* add string loader

* fix samples

* fix samples

* fix samples

* fix samples

* fix samples

* fix samples

* fix samples

* merge Load and LoadPath

* fix sample

optimize: optimise way of init seata