[Feature][Connector]Spark connector for excel Source

[tmljob]

Purpose of this pull request

Spark connector for excel Source

Check list

• [x] Code changed are covered with tests, or it does not need tests for reason:
• [x] If any new Jar binary package adding in your PR, please add License Notice according New License Guide
• [x] If necessary, please update the documentation to describe the new feature. https://github.com/apache/incubator-seatunnel/tree/dev/docs

[wuchunfu]

@tmljob Please resolve the conflicting files, thanks.

[Hisoka-X]

Can this plugin support custom header( or custom fields) in config now?

[tmljob]

@BenJFan @wuchunfu @CalvinKirs Is there anything else that needs to be modified in my PR? Why can't it be merged into dev?

[CalvinKirs]

@BenJFan @wuchunfu @CalvinKirs Is there anything else that needs to be modified in my PR? Why can't it be merged into dev?

can you resolve CI fail first?

[tmljob]

@BenJFan @wuchunfu @CalvinKirs Is there anything else that needs to be modified in my PR? Why can't it be merged into dev?

can you resolve CI fail first?

I don't understand why the build fails under ubuntu, and no clear error message is provided.

[tmljob]

@BenJFan @wuchunfu @CalvinKirs Is there anything else that needs to be modified in my PR? Why can't it be merged into dev?

can you resolve CI fail first?

I don't understand why the build fails under ubuntu, and no clear error message is provided.

@CalvinKirs Is CI OK now, only one task is canceled by timeout.

[CalvinKirs]

@BenJFan @wuchunfu @CalvinKirs Is there anything else that needs to be modified in my PR? Why can't it be merged into dev?

can you resolve CI fail first?

I don't understand why the build fails under ubuntu, and no clear error message is provided.

@CalvinKirs Is CI OK now, only one task is canceled by timeout.

don't worry~

[Hisoka-X]

@CalvinKirs Hi, please check if the license is legal

[EricJoy2048]

This pr is closed because it has not responded for too long. If necessary, please reopen it