feat: added the ability for instances to use local translations from extra repositories (#752)

Author: jajjibhai008

Makefile

@@ -12,6 +12,11 @@ transifex_temp = ./temp/babel-plugin-formatjs
 
 NPM_TESTS=build i18n_extract lint test
 
+# Variables for additional translation sources and imports (define in edx-internal if needed)
+ATLAS_EXTRA_SOURCES =
+ATLAS_EXTRA_INTL_IMPORTS =
+ATLAS_OPTIONS =
+
 .PHONY: test
 test: $(addprefix test.npm.,$(NPM_TESTS))  ## validate ci suite
 
@@ -48,9 +53,10 @@ pull_translations:
                translations/frontend-platform/src/i18n/messages:frontend-platform \
                translations/paragon/src/i18n/messages:paragon \
                translations/frontend-component-footer/src/i18n/messages:frontend-component-footer \
-               translations/frontend-app-learner-dashboard/src/i18n/messages:frontend-app-learner-dashboard
+               translations/frontend-app-learner-dashboard/src/i18n/messages:frontend-app-learner-dashboard \
+               $(ATLAS_EXTRA_SOURCES)
 
-	$(intl_imports) frontend-platform paragon frontend-component-footer frontend-app-learner-dashboard
+	$(intl_imports) frontend-platform paragon frontend-component-footer frontend-app-learner-dashboard $(ATLAS_EXTRA_INTL_IMPORTS)
 
 # This target is used by CI.
 validate-no-uncommitted-package-lock-changes: