feat: AE-892 - Lock the network volume region

[pandyamarut]

config =LiveServerless(
    name="my-endpoint"
)
# This  will automatically create a network volume named "my-endpoint-volume" with 10GB. 

Option 2:

config=LiveServerless(
name="my-endpoint",
networkVolume="vol-abc123def456"  # Existing volume ID
)
# Uses the existing network volume with that ID

Option 3:

# Create a custom network volume configuration
custom_volume = NetworkVolume(
    name="my-custom-volume",
    size=50  # 50GB
)

serverless = LiveServerless(
    name="my-endpoint",
    networkVolume=custom_volume
)
# Will deploy the custom network volume first, then attach it to the serverless endpoint

[deanq]

Be sure to run make check after all your changes. You can ignore the mypy warnings. We can address those later. They don't block CI/CD for now.