New 3rd pillar payment email that suggests you to set up a recurring payment

[ErkoRisthein]

Blocked by #653

[codecov]

Codecov Report

Merging #654 (d63a277) into master (75ffd51) will increase coverage by 0.03%.
The diff coverage is 100.00%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #654      +/-   ##
============================================
+ Coverage     88.35%   88.39%   +0.03%     
  Complexity     1149     1149              
============================================
  Files           242      242              
  Lines          4072     4076       +4     
  Branches        225      225              
============================================
+ Hits           3598     3603       +5     
+ Misses          366      365       -1     
  Partials        108      108              

Impacted Files	Coverage Δ
...ding/payment/email/PaymentEmailContentService.java	100.00% <100.00%> (ø)
...a/onboarding/payment/email/PaymentEmailSender.java	40.00% <100.00%> (+17.77%)	⬆️
.../onboarding/payment/email/PaymentEmailService.java	100.00% <100.00%> (ø)