refactor: Rename file to "pw_json_client.py"

Author: davidkuda

src/pw_command.py

@@ -5,7 +5,7 @@
 import pyperclip
 
 from pw_config import CREDS_DIR, CREDS_FILE_PATH, ENCRYPTION_KEY
-from pw_client import SecretsDataJSONClient
+from pw_json_client import SecretsDataJSONClient
 from pw_encryption import SynchronousEncryption
 from pw_utils import generate_random_password
 from pw_utils import HelpTexts as h