feat: Add credentials-themes to the translation pipeline

This PR needs openedx/credentials-themes#613 before it's merged.

Refs: FC-0012 OEP-58

.github/workflows/extract-translation-source-files.yml

@@ -43,6 +43,7 @@ jobs:
           - completion
           - course-discovery
           - credentials
+          - credentials-themes
           - DoneXBlock
           - edx-ace
           - edx-bulk-grades

transifex.yml

@@ -33,6 +33,14 @@ git:
     source_file_dir: translations/credentials/credentials/conf/locale/en/
     translation_files_expression: 'translations/credentials/credentials/conf/locale/<lang>/'
 
+  # credentials-themes
+  - filter_type: dir
+    file_format: PO
+    source_file_extension: po
+    source_language: en
+    source_file_dir: translations/credentials-themes/edx_credentials_themes/conf/locale/en/
+    translation_files_expression: 'translations/credentials-themes/edx_credentials_themes/conf/locale/<lang>/'
+
   # DoneXBlock
   - filter_type: dir
     file_format: PO
@@ -80,7 +88,7 @@ git:
     source_language: en
     source_file_dir: translations/FeedbackXBlock/feedback/conf/locale/en/
     translation_files_expression: 'translations/FeedbackXBlock/feedback/conf/locale/<lang>/'
-  
+
   # frontend-app-account
   - filter_type: file
     file_format: KEYVALUEJSON