chore: handle provider proxies in proxies api

tunnel/tunnel.go

@@ -127,6 +127,20 @@ func Proxies() map[string]C.Proxy {
 	return proxies
 }
 
+func ProxiesWithProviders() map[string]C.Proxy {
+	allProxies := make(map[string]C.Proxy)
+	for name, proxy := range proxies {
+		allProxies[name] = proxy
+	}
+	for _, p := range providers {
+		for _, proxy := range p.Proxies() {
+			name := proxy.Name()
+			allProxies[name] = proxy
+		}
+	}
+	return allProxies
+}
+
 // Providers return all compatible providers
 func Providers() map[string]provider.ProxyProvider {
 	return providers