internal/boundary: add GetResourceType to Resource

The resource type method is used to automatically
create refresh tokens from a resource when that
resource is the last item returned in a page.

This also renames the iam domain ResourceType method
to GetResourceType to align with the new method.

internal/auth/ldap/auth_method.go

@@ -11,6 +11,7 @@ import (
 	"github.com/hashicorp/boundary/internal/auth/ldap/store"
 	"github.com/hashicorp/boundary/internal/errors"
 	"github.com/hashicorp/boundary/internal/oplog"
+	"github.com/hashicorp/boundary/internal/types/resource"
 	"google.golang.org/protobuf/proto"
 )
 
@@ -112,6 +113,11 @@ func (am *AuthMethod) SetTableName(n string) {
 	am.tableName = n
 }
 
+// GetResourceType returns the resource type of the AuthMethod
+func (am *AuthMethod) GetResourceType() resource.Type {
+	return resource.AuthMethod
+}
+
 // oplog will create oplog metadata for the AuthMethod.
 func (am *AuthMethod) oplog(ctx context.Context, opType oplog.OpType) (oplog.Metadata, error) {
 	const op = "ldap.(AuthMethod).oplog"