fix(one-app-runner): single serve-module invocation

[PixnBits]

Description

single serve-module invocation

Motivation

avoid repeated overhead with many modules for faster startup times to listening on the port

Test Conditions

existing tests have inline snapshots of the command

Types of changes

Check boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation (adding or updating documentation)
• Dependency update
• Security update

Checklist

Check boxes that apply:

• My code follows the code style of this project.
• My change requires a change to the documentation and I have updated the documentation accordingly.
• These changes should be applied to a maintenance branch.
• I have added the Apache 2.0 license header to any new files created.