net.http: support passing client certificates in http.fetch (#11356)

vlib/net/http/http.v

@@ -22,6 +22,11 @@ pub mut:
 	cookies    map[string]string
 	user_agent string = 'v.http'
 	verbose    bool
+	//
+	validate bool   // set this to true, if you want to stop requests, when their certificates are found to be invalid
+	verify   string // the path to a rootca.pem file, containing trusted CA certificate(s)
+	cert     string // the path to a cert.pem file, containing client certificate(s) for the request
+	cert_key string // the path to a key.pem file, containing private keys for the client certificate(s)
 }
 
 pub fn new_request(method Method, url_ string, data string) ?Request {
@@ -119,6 +124,10 @@ pub fn fetch(config FetchConfig) ?Response {
 		user_agent: config.user_agent
 		user_ptr: 0
 		verbose: config.verbose
+		validate: config.validate
+		verify: config.verify
+		cert: config.cert
+		cert_key: config.cert_key
 	}
 	res := req.do() ?
 	return res