First attempt of modules diagram

jalhyd_branch

package-lock.json

package.json

src/app/app.component.html

src/app/app.component.scss

src/app/app.component.ts

src/app/app.module.ts

...components/modules-diagram/modules-diagram.component.html

...components/modules-diagram/modules-diagram.component.scss

...p/components/modules-diagram/modules-diagram.component.ts

src/locale/messages.en.json

src/locale/messages.fr.json