Add account creation component + fallback route for angular

angular.json

src/app/app-routing.module.ts

src/app/app.component.ts

src/app/core/components/contact/contact.component.ts

src/app/core/components/header/header.component.html

src/app/core/components/index.ts

src/app/core/components/login/login.component.html

src/app/core/components/sign-up/sign-up.component.html

src/app/core/components/sign-up/sign-up.component.scss

src/app/core/components/sign-up/sign-up.component.spec.ts

src/app/core/components/sign-up/sign-up.component.ts

src/app/core/core-routing.module.ts

src/app/core/models/auth.model.ts

src/app/core/models/index.ts

src/app/core/services/auth.service.ts

src/app/core/services/matomo.service.ts

src/app/core/validators/password.validator.ts

...app/editorialisation/services/editorialisation.service.ts

src/app/geosource/services/dataset-detail.service.ts

src/app/geosource/services/dataset-research.service.ts