fix(generators/ideas.py): fix typo in variable name 'existing_ideas'

feat(generators/montage.py): add check to skip slide if it already exists
feat(generators/montage.py): add support for DEEPL_ACCESS_KEY and UNSPLASH_ACCESS_KEY environment variables
feat(generators/speak.py): add support for Johanne voice
feat(generators/speak.py): add emotion parameter to generate_voice function
feat(generators/uploader.py): add success message and authorization prompt message to run_local_server method
fix(main.py): check if credits is None before writing to meta.txt file
feat(prompts/marp.md): change theme to gaia and add lead and invert classes

main.py

@@ -53,9 +53,10 @@ async def main():
     script = prepare(path)
     credits = mount(path, script)
     description = f"{idea['description']}\n\nMusic credits: {credits}"
-    with open(path + "/meta.txt", 'w', encoding='utf-8') as f:
-        f.write(description)
-        f.close()
+    if credits != None:
+        with open(path + "/meta.txt", 'w', encoding='utf-8') as f:
+            f.write(description)
+            f.close()
     generate_miniature(path, title=idea['title'], description=idea['description'])
     upload_video(path, idea['title'], description, 28, "", "private", subjectdirpath)
     print(f"Your video is ready! You can find it in {path}.")