add ext_client create, get, delete and list commands

cli/functions/ext_client.go

@@ -0,0 +1,38 @@
+package functions
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gravitl/netmaker/models"
+)
+
+func GetAllExtClients() *[]models.ExtClient {
+	return request[[]models.ExtClient](http.MethodGet, "/api/extclients", nil)
+}
+
+func GetNetworkExtClients(networkName string) *[]models.ExtClient {
+	return request[[]models.ExtClient](http.MethodGet, "/api/extclients/"+networkName, nil)
+}
+
+func GetExtClient(networkName, clientID string) *models.ExtClient {
+	return request[models.ExtClient](http.MethodGet, fmt.Sprintf("/api/extclients/%s/%s", networkName, clientID), nil)
+}
+
+func GetExtClientConfig(networkName, clientID, configType string) *models.ExtClient {
+	return request[models.ExtClient](http.MethodGet, fmt.Sprintf("/api/extclients/%s/%s/%s", networkName, clientID, configType), nil)
+}
+
+func CreateExtClient(networkName, nodeID, extClientID string) {
+	if extClientID != "" {
+		request[any](http.MethodPost, fmt.Sprintf("/api/extclients/%s/%s", networkName, nodeID), &models.CustomExtClient{
+			ClientID: extClientID,
+		})
+	} else {
+		request[any](http.MethodPost, fmt.Sprintf("/api/extclients/%s/%s", networkName, nodeID), nil)
+	}
+}
+
+func DeleteExtClient(networkName, clientID string) *models.SuccessResponse {
+	return request[models.SuccessResponse](http.MethodDelete, fmt.Sprintf("/api/extclients/%s/%s", networkName, clientID), nil)
+}