feat: add preset CSP nonce

[aeneasr]

Closes ory/kratos-selfservice-ui-node#162

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

Merging #2096 (67ae187) into master (4b541af) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2096      +/-   ##
==========================================
- Coverage   75.01%   75.00%   -0.02%     
==========================================
  Files         293      293              
  Lines       15373    15374       +1     
==========================================
- Hits        11532    11531       -1     
- Misses       3012     3013       +1     
- Partials      829      830       +1     

Impacted Files	Coverage Δ
ui/node/attributes.go	60.86% <ø> (ø)
ui/node/attributes_input.go	87.15% <100.00%> (+0.11%)	⬆️
persistence/sql/persister_courier.go	85.00% <0.00%> (-3.34%)	⬇️

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