Consent check if auth allowed

[wandi34]

Summary

• Add check, if consent auth is allowed for the chosen PSU
• Change IBAN of PSU-Pending since the same IBAN is already in use by PSU-revokedByPsu

Checklist for Definition of Done

Depending on the task some of the following jobs are not relevant. Please check the items or cross them out (~~text~~).

• [x] Code is technically reviewed by myself
• [x] Code is manually tested
• [x] Automatic tests for new functionality are created
• [x] Documentation is updated
• [x] Git history is clean

[codecov[bot]]

Codecov Report

Merging #88 into master will increase coverage by 0.1%. The diff coverage is 90.9%.

@@            Coverage Diff             @@
##             master     #88     +/-   ##
==========================================
+ Coverage     71.69%   71.8%   +0.1%     
- Complexity      283     286      +3     
==========================================
  Files            76      76             
  Lines          1583    1589      +6     
  Branches        109     109             
==========================================
+ Hits           1135    1141      +6     
  Misses          386     386             
  Partials         62      62

Impacted Files	Coverage Δ	Complexity Δ
...sandbox/xs2a/service/redirect/RedirectService.java	87.5% <90.9%> (+0.61%)	28 <4> (+3)	:arrow_up:

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