feat: all payment link tools (#19)

* feat: create_payment_link_upi

* feat: create_payment_link_upi additional fields

* feat: send_payment_link

* feat: update_payment_link

* feat: fetch_all_payment_links

* docs: update pl tools

* fix: adding new validator

* feat: validators set target key

* feat: UTs for new val functions.

* feat: additional fields for std payment links

* fix: type mismatches

* fix: optional params

* fix: fixed sdk call for fetch all and remove business logic vals

* fix: added params for std links

* refactor: better names for val funcs

* fix: UTs

* fix: UTs

* fix: lint errs

* fix: lint errs

* fix: change validator zero value behaviour

* fix: lint errs

Author: KarthikBoddeda

README.md

@@ -12,8 +12,13 @@ Currently, the Razorpay MCP Server provides the following tools:
 | `fetch_payment`                      | Fetch payment details with ID                          | [Payment](https://razorpay.com/docs/api/payments/fetch-with-id)
 | `fetch_payment_card_details`         | Fetch card details used for a payment                  | [Payment](https://razorpay.com/docs/api/payments/fetch-payment-expanded-card)
 | `fetch_all_payments`                 | Fetch all payments with filtering and pagination       | [Payment](https://razorpay.com/docs/api/payments/fetch-all-payments)
-| `update_payment`                     | Update the notes field of a payment                    | [Payment](https://razorpay.com/docs/api/payments/update)| `create_payment_link`                | Creates a new payment link (standard)      | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/create-standard)
-| `fetch_payment_link`                 | Fetch details of a payment link (standard)             | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/fetch-id-standard/)
+| `update_payment`                     | Update the notes field of a payment                    | [Payment](https://razorpay.com/docs/api/payments/update)|
+| `create_payment_link`                | Creates a new payment link (standard)                  | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/create-standard)
+| `create_payment_link_upi`            | Creates a new UPI payment link                         | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/create-upi)
+| `fetch_all_payment_links`            | Fetch all the payment links                            | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/fetch-all-standard)
+| `fetch_payment_link`                 | Fetch details of a payment link                        | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/fetch-id-standard/)
+| `send_payment_link`                  | Send a payment link via SMS or email.                  | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/resend)
+| `update_payment_link`                | Updates a new standard payment link                    | [Payment Link](https://razorpay.com/docs/api/payments/payment-links/update-standard)
 | `create_order`                       | Creates an order                                       | [Order](https://razorpay.com/docs/api/orders/create/)
 | `fetch_order`                        | Fetch order with ID                                    | [Order](https://razorpay.com/docs/api/orders/fetch-with-id)
 | `fetch_all_orders`                   | Fetch all orders                                       | [Order](https://razorpay.com/docs/api/orders/fetch-all)