Add duckduckgo-search to slim requirements,

Add pass provider as model in the client,
Fix missing @property in version utils

docs/async_client.md

@@ -292,7 +292,7 @@ client = AsyncClient(provider=g4f.Provider.OpenaiChat)
 
 response = await client.chat.completions.create(
     model="gpt-4",
-    provider=g4f.Provider.Bing,
+    provider=g4f.Provider.CopilotAccount,
     messages=[
         {
             "role": "user",

docs/legacy.md

@@ -7,7 +7,7 @@ import g4f
 
 g4f.debug.logging = True  # Enable debug logging
 g4f.debug.version_check = False  # Disable automatic version checking
-print(g4f.Provider.Bing.params)  # Print supported args for Bing
+print(g4f.Provider.Gemini.params)  # Print supported args for Bing
 
 # Using automatic a provider for the given model
 ## Streamed completion
@@ -78,7 +78,7 @@ for message in response:
 
 Image upload and generation are supported by three main providers:
 
-- **Bing & Other GPT-4 Providers:** Utilizes Microsoft's Image Creator.
+- **Microsoft Copilot & Other GPT-4 Providers:** Utilizes Microsoft's Image Creator.
 - **Google Gemini:** Available for free accounts with IP addresses outside Europe.
 - **OpenaiChat with GPT-4:** Accessible for users with a Plus subscription.