Implement additional UPI payment address types

[qurbat]

Reference for VPA types:
https://news.ycombinator.com/item?id=29358108

To-do:

• Test the various remaining address types referenced in the post above to verify whether they work, or not
• Implement address types that are found to be working

[srikanthlogic]

• - Aadhaar based mapper is unsupported - NPCI Circular
• - RuPay based VPA - Likely never existed except for documentation, stands outlawed with mandatory card tokenisation.
• - IFSC + Account Number based VPA - This works on some apps, but looks like not all PSPs are resolving it during verify VPA leg, but instead are directly posting and NPCI routes the transaction directly without address resolution. Validation of such VPA might be challange. But leaving it open for more research.
• - We already support @pspcode based VPAs
• - Credit card VPAs are also technically outlawed by card tokenisation regulation, even if not, not something we should be supporting considering card numbers are sensitive personal information.