Add bytes_billed to BigQueryAdapterResponse (#570)

* adding bytes_billed to adapter response

* adding changie

---------

Co-authored-by: Florian Eiden <florian.eiden@fleid.fr>
Co-authored-by: Matthew McKnight <91097623+McKnight-42@users.noreply.github.com>

.changes/unreleased/Features-20230228-094234.yaml

@@ -0,0 +1,6 @@
+kind: Features
+body: 'Adding `bytes_billed` to `BigQueryAdapterResponse` '
+time: 2023-02-28T09:42:34.557696-03:00
+custom:
+  Author: bruno-szdl
+  Issue: "560"

dbt/adapters/bigquery/connections.py

@@ -89,6 +89,7 @@ class BigQueryConnectionMethod(StrEnum):
 @dataclass
 class BigQueryAdapterResponse(AdapterResponse):
     bytes_processed: Optional[int] = None
+    bytes_billed: Optional[int] = None
     location: Optional[str] = None
     project_id: Optional[str] = None
     job_id: Optional[str] = None
@@ -471,6 +472,7 @@ def execute(
         code = None
         num_rows = None
         bytes_processed = None
+        bytes_billed = None
         location = None
         job_id = None
         project_id = None
@@ -505,6 +507,7 @@ def execute(
 
         # set common attributes
         bytes_processed = query_job.total_bytes_processed
+        bytes_billed = query_job.total_bytes_billed
         slot_ms = query_job.slot_millis
         processed_bytes = self.format_bytes(bytes_processed)
         location = query_job.location
@@ -526,6 +529,7 @@ def execute(
             rows_affected=num_rows,
             code=code,
             bytes_processed=bytes_processed,
+            bytes_billed=bytes_billed,
             location=location,
             project_id=project_id,
             job_id=job_id,