PIM configuration includes dataset and variable-update APIs

### User Story Description

VISOR's PIM configuration need to have the following added:

- add_dataset
- list_datasets
- remove_dataset
-list_variables
- update_variables

### Acceptance Criteria

VISOR's PIM configuration has been updated to include the APIs listed above.

### Additional Links

_No response_

### Requires new or update to third party ? If "yes" add the name(s) and the version(s) of the Third Party Software.

No

### Name and Version for Third Parties

_No response_

此 issue 未提及任何檔案或測試。先找出 PIM 設定的進入點和現有的 API 方法，然後依循它們的模式實作所要求的五個方法；當列出的所有 API 都在設定中公開並通過專案相關的檢查時，即表示完成。

由索引模型根據 Issue 內容生成。