Support proxies in request() directly

Author: dolfies

discord/http.py

@@ -786,9 +786,11 @@ async def request(
         kwargs['headers'] = headers
 
         # Proxy support
-        if self.proxy is not None:
+        proxy = kwargs.pop('proxy', self.proxy)
+        proxy = kwargs.pop('proxy_auth', self.proxy_auth)
+        if proxy is not None:
             kwargs['proxies'] = {'all': self.proxy}
-        if self.proxy_auth is not None:
+        if proxy_auth is not None:
             headers['Proxy-Authorization'] = self.proxy_auth.encode()
 
         if not self._global_over.is_set():