Organisation : gestion de l'image (#895)

assets/sass/_theme/design-system/typography.sass

assets/sass/_theme/sections/organizations.sass

hugo.yaml

layouts/organizations/list.html

layouts/partials/blocks/templates/organizations.html

layouts/partials/blocks/templates/organizations/grid.html

layouts/partials/blocks/templates/organizations/map.html

layouts/partials/organizations/list/item/image.html

layouts/partials/organizations/list/item/organization.html

layouts/partials/organizations/logo.html

layouts/partials/organizations/organization.html

layouts/partials/organizations/organizations.html