Fix responsivness of hero blocks, add flags

source/_patterns/00-atoms/flags/basic-flag.mustache

source/_patterns/00-atoms/flags/flag-color-variants.mustache

source/_patterns/00-atoms/flags/flag-size-variants.mustache

source/_patterns/02-organisms/03-hero/hero.mustache

source/_patterns/02-organisms/03-hero/image-hero.mustache

source/css/atoms/flag.pcss

source/css/atoms/heading.pcss

source/css/organisms/hero.pcss

source/css/style.pcss

source/dist/style.pkgd.css

source/images/hero-profile-img.png

source/images/logo-full-white.svg

source/images/logo-round-white.svg