[Merged] Ability to create a recurring service with a set number of billing cycles

This request was merged into a consolidated ticket.

Please follow the active ticket here: https://feedback.manyrequests.com/p/payment-in-instalments-for-invoices-and-checkout

Original request:

Enabling the user to create a service with a set number of renewal cycles, after which the subscription is cancelled.

This can help users create payment installments for project-based engagements (ex. $5k project for 2 installments of $2.5k) as well as fixed-contract retainer engagements (ex. 6 month contract for web support that automatically cancels after 6 cycles)