Add way to initialize AzureClients with provided TokenCredential

initializer.go

@@ -3,6 +3,7 @@ package azuremonitormetricsreceiver
 import (
 	"context"
 	"fmt"
+	"github.com/Azure/azure-sdk-for-go/sdk/azcore"
 	"strings"
 
 	"github.com/Azure/azure-sdk-for-go/sdk/azidentity"
@@ -33,12 +34,17 @@ func (w *metricDefWrapper) List(ctx context.Context, resourceID string, options
 	return response, nil
 }
 
-// CreateAzureClients creates Azure clients.
+// CreateAzureClients creates Azure clients with service principal credentials
 func CreateAzureClients(subscriptionID string, clientID string, clientSecret string, tenantID string) (*AzureClients, error) {
 	credential, err := azidentity.NewClientSecretCredential(tenantID, clientID, clientSecret, nil)
 	if err != nil {
 		return nil, fmt.Errorf("error creating Azure client credential: %w", err)
 	}
+	return CreateAzureClientsWithCreds(subscriptionID, credential)
+}
+
+// CreateAzureClientsWithCreds creates Azure clients with provided TokenCredential
+func CreateAzureClientsWithCreds(subscriptionID string, credential azcore.TokenCredential) (*AzureClients, error) {
 	metricClient, err := armmonitor.NewMetricsClient(subscriptionID, credential, nil)
 	if err != nil {
 		return nil, fmt.Errorf("error creating Azure metric client: %w", err)