Modified charge.py example

[Jayant-saksham]

Why?

Since the creation of charge is migrated to payment_intent method, we have made modifications in the charge.py file

What?

Key changes

• Included the payment_intent method for creation of charge
• Included the legacy code for educational purpose

See Also

[cla-assistant[bot]]

All committers have signed the CLA.

[cla-assistant[bot]]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[Jayant-saksham]

@ramya-stripe Could you please review this PR ?

[mbroshi-stripe]

@Jayant-saksham thanks for putting together this submission, but we're not looking to update our examples at this time.