Add missing langDir properties to components

packages/app-shell/src/app-shell.js

packages/app-shell/src/auth-menu-button.js

packages/app-shell/src/dbp-activity-example.js

packages/app-shell/src/dbp-app-shell-welcome.js

packages/app-shell/src/i18n.js

packages/app-shell/src/tugraz-logo.js

packages/auth/src/auth-keycloak.js

packages/auth/src/dbp-auth-demo.js

packages/auth/src/i18n.js

packages/auth/src/login-button.js

packages/common/dbp-common-demo.js

packages/common/src/translation.js

packages/data-table-view/src/data-table-view.js

packages/data-table-view/src/dbp-data-table-view-demo.js

packages/file-handling/src/clipboard.js

packages/file-handling/src/demo.js

packages/file-handling/src/file-sink.js

packages/file-handling/src/file-source.js

packages/file-handling/src/nextcloud-file-picker.js

...view/src/dbp-knowledge-base-web-page-element-view-demo.js