[ADD] account_move_last_payment display last date and payment method on invoice

account_move_last_payment/README.md

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+# Account Move Last Payment
+
+Expose on `account.move` the date and method of the most recent real payment reconciled
+with an invoice, as two stored, exportable fields shown in the invoice list view.
+
+## Features
+
+- `last_payment_date` (Date): date of the most recent payment reconciled with the
+  invoice — partial payments included.
+- `last_payment_method` (Char): method of that most recent payment: the payment method
+  line name for explicit payments, "Bank Transfer" when the invoice was settled through
+  a direct bank statement line reconciliation.
+- Covers both Community reconciliation paths: explicit payment ("Register Payment"
+  wizard) and direct bank statement reconciliation. Manual reconciliations without
+  payment or statement line are ignored, as are exchange difference moves.
+- Recomputes automatically on reconcile / unreconcile and when a payment or statement
+  line date changes.
+- Both fields are stored and displayed as optional columns of the invoice list view, so
+  they are exportable.
+
+## Installation
+
+Depends on the `account` module only.
+
+## Credits
+
+### Contributors
+
+- Elabore - Assisted by AI
+
+### Maintainer
+
+- Elabore