Update README.md; download progress bar in CLI. (#1797)

* Update README.md

- minor PR
- added model_info usage guide based on #1623 in README.md .

* "added tqdm bar for model download"

* Update manage.py

* fixed style

* fixed style

* sort imports

README.md

@@ -145,7 +145,31 @@ If you are on Windows, 👑@GuyPaddock wrote installation instructions [here](ht
     ```
     $ tts --list_models
     ```
-
+- Get model info (for both tts_models and vocoder_models):
+    - Query by type/name:
+        The model_info_by_name uses the name as it from the --list_models. 
+        ```
+        $ tts --model_info_by_name "<model_type>/<language>/<dataset>/<model_name>"
+        ```
+        For example:
+        
+        ```
+        $ tts --model_info_by_name tts_models/tr/common-voice/glow-tts
+        ```
+        ```
+        $ tts --model_info_by_name vocoder_models/en/ljspeech/hifigan_v2
+        ```
+    - Query by type/idx:
+        The model_query_idx uses the corresponding idx from --list_models. 
+        ```
+        $ tts --model_info_by_idx "<model_type>/<model_query_idx>"
+        ```
+        For example:
+        
+        ```
+        $ tts --model_info_by_idx tts_models/3 
+        ```
+        
 - Run TTS with default models:
 
     ```

TTS/utils/manage.py

@@ -1,4 +1,3 @@
-import io
 import json
 import os
 import zipfile
@@ -7,6 +6,7 @@ from shutil import copyfile, rmtree
 from typing import Dict, Tuple
 
 import requests
+from tqdm import tqdm
 
 from TTS.config import load_config
 from TTS.utils.generic_utils import get_user_data_dir
@@ -337,11 +337,20 @@ class ModelManager(object):
     def _download_zip_file(file_url, output_folder):
         """Download the github releases"""
         # download the file
-        r = requests.get(file_url)
+        r = requests.get(file_url, stream=True)
         # extract the file
         try:
-            with zipfile.ZipFile(io.BytesIO(r.content)) as z:
+            total_size_in_bytes = int(r.headers.get("content-length", 0))
+            block_size = 1024  # 1 Kibibyte
+            progress_bar = tqdm(total=total_size_in_bytes, unit="iB", unit_scale=True)
+            temp_zip_name = os.path.join(output_folder, file_url.split("/")[-1])
+            with open(temp_zip_name, "wb") as file:
+                for data in r.iter_content(block_size):
+                    progress_bar.update(len(data))
+                    file.write(data)
+            with zipfile.ZipFile(temp_zip_name) as z:
                 z.extractall(output_folder)
+            os.remove(temp_zip_name)  # delete zip after extract
         except zipfile.BadZipFile:
             print(f" > Error: Bad zip file - {file_url}")
             raise zipfile.BadZipFile  # pylint: disable=raise-missing-from