Source Chargebee: add new streams coupon, event and transaction

[marcosmarxm]

Tell us about the problem you're trying to solve

Add streams not supported to Chargebee connector.

Describe the solution you’d like

A clear and concise description of what you want to see happen, or the change you would like to see

Describe the alternative you’ve considered or used

A clear and concise description of any alternative solutions or features you've considered or are using today.

Additional context

Add any other context or screenshots about the feature request here.

Are you willing to submit a PR?

Remove this with your answer :-)

[aadityasinha-dotcom]

Can I work on this issue?

[marcosmarxm]

Sure @aadityasinha-dotcom ! I'll assign this issue to you

[aadityasinha-dotcom]

Thanks 👍

[joelluijmes]

I don't know if you were still planning to work on this @aadityasinha-dotcom, nor didn't want to take over. But I've just noticed this issue, yet already created a PR to implement event stream #10143 🙈

[aadityasinha-dotcom]

I guess I will work on the coupon and transaction streams. @joelluijmes