text: Title: Support TLS secured proxies
  Body: 
  Instead of raise error before making requests:
  ```py
  (CurlError("Failed to perform, ErrCode: 35, Reason: 'error:100000f7:SSL routines:OPENSSL_internal:WRONG_VERSION_NUMBER'"),)
  ```
  
  We could wrap CurlError if proxy scheme is HTTPS, then show additional warning:
  ```py
       warning.warn(
          "You are using httpS proxy, we noticed proxy-server doesn't support HTTPS,"
          " try replace proxy protocol 'https://' with 'http://' and check if it's helping."
       )
  ```
  
  _Originally posted in https://github.com/yifeikong/curl_cffi/pull/171#discussion_r1429055071_