Add login page and basic nested router with nav guards

src/App.vue

src/assets/images/ls-login.png

src/assets/logo.svg

src/components/NavbarTop.vue

src/components/SidebarLeft.vue

src/router/index.ts

src/stores/auth.ts

src/views/BucketsView.vue

src/views/DashboardView.vue

src/views/LoginView.vue