Add the possibility to comment spring properties in modules

[DamnClin]

Sometimes it's usefull to add some comments in spring properties, the API can be:

.springMainProperties()
  .comment(propertyKey("springdoc.swagger-ui.operationsSorter"), comment("This is a comment"))
  .set(propertyKey("springdoc.swagger-ui.operationsSorter"), propertyValue("alpha"))

This will add a comment before the given property key

[DamnClin]

Hum, I'm really not sure this is a good first issue, designing this may be challenging! (we have to stay yaml friendly)

[pascalgrimaud]

ahaha ok, 'good first issue' removed

[pascalgrimaud]

Adding a bounty as I'd like to have this

[pascalgrimaud]

Increasing the bounty, following the amount of work and time spent on this

[renanfranca]

Increasing the bounty, following the amount of work and time spent on this

Thanks @pascalgrimaud 💪❤️😃!