feat: Taxonomy export menu [FC-0036] (#645)

* feat: System-defined tooltip added
* feat: Taxonomy card menu added. Export menu item added
* feat: Modal for export taxonomy
* feat: Connect with export API
* test: Tests for API and selectors
* feat: Use windows.location.href to call the export endpoint
* test: ExportModal.test added
* style: Delete unnecessary code
* docs: README updated with taxonomy feature
* style: TaxonomyCard updated to a better code style
* style: injectIntl replaced by useIntl on taxonomy pages and components
* refactor: Move and rename taxonomy UI components to match 0002 ADR
* refactor: Move api to data to match with 0002 ADR
* test: Refactor ExportModal tests
* chore: Fix validations
* chore: Lint
* refactor: Moving hooks to apiHooks
* style: Nit on return null

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Co-authored-by: Rômulo Penido <romulo@dash.dev.br>
Co-authored-by: Christofer Chavez <christofer@example.com>

src/index.scss

@@ -18,4 +18,5 @@
 @import "course-updates/CourseUpdates";
 @import "export-page/CourseExportPage";
 @import "import-page/CourseImportPage";
+@import "taxonomy/taxonomy-card/TaxonomyCard";
 @import "files-and-videos";