feature: css - common styles + test

package.json

src/dependencies.pug

src/header.pug

src/index.pug

src/interactions.html

src/styles/hubl-app/_index.scss

src/styles/hubl-framework/README.md

src/styles/hubl-framework/_index.scss

src/styles/hubl-framework/avatars/_index.scss

src/styles/hubl-framework/badges/_index.scss

src/styles/hubl-framework/buttons/_index.scss

src/styles/hubl-framework/commons/borders.scss

src/styles/hubl-framework/commons/colors.scss

src/styles/hubl-framework/commons/texts.scss

src/styles/hubl-framework/forms/_index.scss

src/styles/hubl-framework/forms/buttons.scss

src/styles/hubl-framework/forms/inputs.scss

src/styles/hubl-framework/forms/widgets.scss

src/styles/hubl-framework/icons/_index.scss

src/styles/hubl-framework/icons/colors.scss