[feature]: Refactor the Payment Code Base

[ziggie1984]

This is the tracking issue for the different payment refactor PR's.

1. Refactor Payment PR 1 #9825
2. Refactor Payment PR 2 #9826
3. Refactor Payment PR 3 #9844
4. Refactor Payment PR 4 #9847
5. Refactor Payment PR 5 (discarded because merged into wrong branch) #10151

Head refactor PR which will not be merged but is here to verify the itest pass on the overall direction:

#9822

[ziggie1984]

This refactors effects #8834, which should be done when the SQLization is finished.

[saubyk]

@ziggie1984 can this issue be closed now, since all the above linked prs are merged?

[ziggie1984]

Refactor series is complete closing this issue.