* fix: switching of mode of payments
* feat: transaction limit for mpesa integration
* feat: resend payment request if one fails
* feat: make new request only for failed ones
* fix: invalid amount for mpesa request
* fix: payment successful message not shown
* fix: url and business shortcode for live env
* fix: duplicate items validation for pos invoices
* fix: pos closing entry queued status
* fix: peroid end date for amended pos closing