Keep the comments on the struct and instead go generate the serpent descriptions from those

[BrunoQuaresma]

Related to: #140
Reference: #140 (comment)

[BrunoQuaresma]

After talking to @Emyrk and @mafredri we decided to move the comments back to the struct and keep them in the CLI Description field too even resulting in duplication because of developing a generator for this use case.