Add diagram, using mingrammer

[pascalgrimaud]

Helped by https://github.com/mingrammer/diagrams

[codecov]

Codecov Report

Merging #310 (22caf5d) into main (9ab7693) will not change coverage.
The diff coverage is n/a.

❗ Current head 22caf5d differs from pull request most recent head f09185d. Consider uploading reports for the commit f09185d to get more accurate results

@@             Coverage Diff             @@
##                main      #310   +/-   ##
===========================================
  Coverage     100.00%   100.00%           
- Complexity       454       455    +1     
===========================================
  Files             80        80           
  Lines           1452      1435   -17     
  Branches          32        32           
===========================================
- Hits            1452      1435   -17     

Impacted Files	Coverage Δ
...tor/buildtool/maven/domain/MavenDomainService.java	100.00% <0.00%> (ø)
...frastructure/secondary/ProjectLocalRepository.java	100.00% <0.00%> (ø)
.../security/jwt/domain/JwtSecurityDomainService.java	100.00% <0.00%> (ø)
...ties/domain/SpringBootPropertiesDomainService.java	100.00% <0.00%> (ø)
src/main/java/tech/jhipster/light/JhlightApp.java
src/main/java/tech/jhipster/light/JHLightApp.java	100.00% <0.00%> (ø)

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