[CH] Unsupported spark function list [please leave a comment if you plan to pick some]

[taiyang-li]

Description

Here listed spark functions still not supported by Gluten CH backend. Please leave a comment if you'd like to pick some. In the below list, [√] means someone is working in progress for the corresponding function.

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• [x] https://github.com/apache/incubator-gluten/issues/6816
• [x] https://github.com/apache/incubator-gluten/issues/7100
• [ ] https://github.com/apache/incubator-gluten/issues/6815
• [ ] https://github.com/apache/incubator-gluten/issues/6814
• [x] https://github.com/apache/incubator-gluten/issues/6813
• [ ] https://github.com/apache/incubator-gluten/issues/6812
• [ ] https://github.com/apache/incubator-gluten/issues/6811
• [x] https://github.com/apache/incubator-gluten/issues/6810
• [x] https://github.com/apache/incubator-gluten/issues/6809
• [x] https://github.com/apache/incubator-gluten/issues/6808
• [ ] https://github.com/apache/incubator-gluten/issues/6807
• [x] https://github.com/apache/incubator-gluten/issues/6806
• [x] https://github.com/apache/incubator-gluten/issues/6805
• [ ] https://github.com/apache/incubator-gluten/issues/4945
• [ ] https://github.com/apache/incubator-gluten/issues/4730
• [ ] Kurtosis
• [ ] UnixMillis
• [ ] UnixMicros
• [ ] MillisToTimestamp
• [ ] MicrosToTimestamp
• [ ] Stack
• [ ] TransformKeys
• [ ] TransformValues

[baibaichen]

@taiyang-li let's discuss this

[Yohahaha]

can you merge this issue into #4039? Github allow only 3 pinned issue.