model support (gpt4o) in project. (#1760)

* Add the environment variable: OPEN_BROWSER

* Add configurable browser launching with custom arguments

- Update `config.py` to include options for specifying the browser and its arguments for opening URLs.
- Modify `main.py` to use the configured browser settings from `config.py` to launch the web page.
- Enhance `config_loader.py` to process path-like strings by expanding and normalizing paths, which supports the configuration improvements.

* Add support for the following models:

"gpt-4o", "gpt-4o-2024-05-13"

---------

Co-authored-by: binary-husky <qingxu.fu@outlook.com>

request_llms/bridge_all.py

@@ -175,6 +175,24 @@ model_info = {
         "token_cnt": get_token_num_gpt4,
     },
 
+    "gpt-4o": {
+        "fn_with_ui": chatgpt_ui,
+        "fn_without_ui": chatgpt_noui,
+        "endpoint": openai_endpoint,
+        "max_token": 128000,
+        "tokenizer": tokenizer_gpt4,
+        "token_cnt": get_token_num_gpt4,
+    },
+
+    "gpt-4o-2024-05-13": {
+        "fn_with_ui": chatgpt_ui,
+        "fn_without_ui": chatgpt_noui,
+        "endpoint": openai_endpoint,
+        "max_token": 128000,
+        "tokenizer": tokenizer_gpt4,
+        "token_cnt": get_token_num_gpt4,
+    },
+
     "gpt-4-turbo-preview": {
         "fn_with_ui": chatgpt_ui,
         "fn_without_ui": chatgpt_noui,