Feat: example values as placeholders to additional fields

[imsergiy]

PR checklist

Please tick all of the below (if a certain item is not required for this PR please tick the box anyway)

Docs

• [x] If you added new code; is it self documenting? (all the variable names clear, comments added where appropriate)
• [x] If you touched existing code; did you refactor existing naming, added comments where necessary?

Tests

• [x] If your ticket adds new functionality; have you added unit tests to verify behaviour?
• [ ] If your ticket alters user interaction with the UI; have you added integration tests?
• [ ] Do your tests check for every convievable user behabviour? (all behaviours the user can perform)

Typing

• [x] If you added new code; have you added typing?
• [ ] If you touched existing code; have you improved its typing?

Styling

• [ ] If new styles were created; Did you refactor/add more styles in css-in-js style?
• [ ] Are all fonts, sizes, colours, margins, paddings in line with designs?
• [ ] Did you perform a visual comparison of the implementation with the designs?

[codecov[bot]]

Codecov Report

Merging #357 (892582a) into master (9a66b5c) will increase coverage by 0.15%. The diff coverage is 86.95%.

@@            Coverage Diff             @@
##           master     #357      +/-   ##
==========================================
+ Coverage   68.08%   68.24%   +0.15%     
==========================================
  Files          66       66              
  Lines        1523     1540      +17     
  Branches      234      239       +5     
==========================================
+ Hits         1037     1051      +14     
- Misses        486      489       +3     

Impacted Files	Coverage Δ
src/helpers/utils.ts	93.68% <86.95%> (-2.47%)	:arrow_down:

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