feat: add getting-started page to overwiew Castopod resources

astro-i18next.config.ts

package-lock.json

package.json

src/components/molecules/Card.astro

src/components/organisms/Features.astro

src/components/organisms/Footer.astro

src/components/organisms/Header.astro

src/components/organisms/MainNav.astro

src/components/templates/GettingStarted.astro

src/components/templates/Home.astro

src/locales/en/common.json

src/locales/en/getting-started.json

src/locales/en/home.json

src/locales/fr/common.json

src/locales/fr/getting-started.json

src/locales/fr/home.json

src/pages/fr/getting-started.astro

src/pages/fr/index.astro

src/pages/getting-started.astro

src/pages/index.astro