feat: tax form download stage (#4513)

* feat: start on fix

* fix: withdraw btn

* fix: lint issues

* feat: start on download stage for tax form modal

* fix: use button rather than span

* fix: lint

* fix: lint issues

* feat: tax form notification email for users who didnt get chance to download

* feat: finish download stage for tax modal

* fix: lint & i18n

* fix: lint + svg cleanup

---------

Signed-off-by: Calum H. <contact@cal.engineer>
Co-authored-by: --global <--global>

apps/frontend/src/composables/featureFlags.ts

@@ -22,6 +22,7 @@ export const DEFAULT_FEATURE_FLAGS = validateValues({
 	showVersionFilesInTable: false,
 	showAdsWithPlus: false,
 	alwaysShowChecklistAsPopup: true,
+	testTaxForm: false,
 
 	// Feature toggles
 	projectTypesPrimaryNav: false,