example: add emnist dataset

[anda-ren]

Description

https://cloud.starwhale.cn/projects/14/datasets/5/versions/22/files

Modules

• UI
• Controller
• Agent
• Client
• Python-SDK
• Others

Checklist

• run code format and lint check
• add unit test
• add necessary doc

[codecov]

Codecov Report

Merging #1444 (53ddded) into main (27db502) will increase coverage by 5.58%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #1444      +/-   ##
============================================
+ Coverage     80.31%   85.90%   +5.58%     
============================================
  Files           293       65     -228     
  Lines         14034     7385    -6649     
  Branches        696        0     -696     
============================================
- Hits          11272     6344    -4928     
+ Misses         2487     1041    -1446     
+ Partials        275        0     -275     

Flag	Coverage Δ
controller	?
standalone	85.90% <ø> (ø)
unittests	85.90% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...omain/dataset/objectstore/StorageAccessParser.java
...ava/ai/starwhale/mlops/common/util/RandomUtil.java
...hale/mlops/schedule/k8s/ResourceOverwriteSpec.java
.../ai/starwhale/mlops/domain/user/SaltGenerator.java
...rwhale/mlops/domain/task/status/WatchableTask.java
...ai/starwhale/mlops/domain/job/step/StepHelper.java
...va/ai/starwhale/mlops/api/DataStoreController.java
...e/mlops/domain/storage/StoragePathCoordinator.java
...n/java/ai/starwhale/mlops/api/TaskLogWsServer.java
...a/ai/starwhale/mlops/datastore/ColumnTypeList.java
... and 218 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

[tianweidut]

LGTM