Add global namespace 'dbp' to all toolkit components to enable overrides

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/de/translation.json

packages/app-shell/src/i18n/en/translation.json

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

packages/auth/src/auth-keycloak.js

packages/auth/src/i18n/de/translation.json

packages/auth/src/i18n/en/translation.json

packages/auth/src/login-button.js

packages/common/README.md

packages/common/dbp-common-demo.js

packages/common/error.js

packages/common/i18next.js

packages/common/jsonld.js

packages/common/src/i18n/de/translation.json

packages/common/src/i18n/en/translation.json

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

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