Remove datePicker and bulma dependencies + add style

package.json

src/App.tsx

src/assets/icons/ecolyo-logo.svg

src/assets/icons/logo.png

src/components/DateSelector/DateSelector.tsx

src/components/DateSelector/dateSelector.scss

src/components/Editing/Editing.tsx

src/components/Editing/editing.scss

src/components/Layout/Layout.tsx

src/components/Layout/layout.module.scss

src/components/Menu/Menu.tsx

src/components/Menu/menu.scss

src/components/Navbar/Navbar.tsx

src/components/Navbar/navbar.scss

src/styles/config/_colors.scss

src/styles/config/_layout.scss

src/styles/index.scss