feat(browser): add CDP URL configuration support

Add support for direct CDP URL configuration in BrowserConfig and ManagedBrowser classes. This allows connecting to remote browser instances using custom CDP endpoints instead of always launching a local browser.

- Added cdp_url parameter to BrowserConfig
- Added cdp_url support in ManagedBrowser.start() method
- Updated documentation for new parameters

crawl4ai/async_crawler_strategy.py

@@ -102,6 +102,7 @@ class ManagedBrowser:
         logger=None,
         host: str = "localhost",
         debugging_port: int = 9222,
+        cdp_url: Optional[str] = None, 
     ):
         """
         Initialize the ManagedBrowser instance.
@@ -116,6 +117,7 @@ class ManagedBrowser:
             logger (logging.Logger): Logger instance for logging messages. Default: None.
             host (str): Host for debugging the browser. Default: "localhost".
             debugging_port (int): Port for debugging the browser. Default: 9222.
+            cdp_url (str or None): CDP URL to connect to the browser. Default: None.
         """
         self.browser_type = browser_type
         self.user_data_dir = user_data_dir
@@ -129,9 +131,16 @@ class ManagedBrowser:
 
     async def start(self) -> str:
         """
-        Starts the browser process and returns the CDP endpoint URL.
-        If user_data_dir is not provided, creates a temporary directory.
+        Starts the browser process or returns CDP endpoint URL.
+        If cdp_url is provided, returns it directly.
+        If user_data_dir is not provided for local browser, creates a temporary directory.
+        
+        Returns:
+            str: CDP endpoint URL
         """
+        # If CDP URL provided, just return it
+        if self.cdp_url:
+            return self.cdp_url
 
         # Create temp dir if needed
         if not self.user_data_dir: