backend/backends: Add verbose to ExecutableSerialisiation initializer
There are cases in the backend like this:
```python
e = ExecutableSerialisation(...)
e.verbose = v
```
setting it from the initializer is cleaner.
@@ -160,6 +160,7 @@ class ExecutableSerialisation:
capture: T.Optional[bool] = None,
feed: T.Optional[bool] = None,
tag: T.Optional[str] = None,
+ verbose: bool = False,
) -> None:
self.cmd_args = cmd_args
self.env = env
@@ -172,7 +173,7 @@ class ExecutableSerialisation:
self.feed = feed
self.pickled = False
self.skip_if_destdir = False
- self.verbose = False
+ self.verbose = verbose
self.subproject = ''
self.tag = tag
