Allow suspend/resume of simulations on Batch runs

[tamuri]

Towards implementing #1665, for suspend/resume when using tlo batch-submit with following caveats:

1. Currently only suspends/resumes exactly the draw+run that was suspended (i.e. cannot use other draw's runs to resume different draws - which is what we want) done
2. Have to know some internal Azure Batch environment variables to get the path to pickled simulation - want to get rid of that, somehow. done

[Copilot]

Pull Request Overview

This PR implements suspend/resume functionality for simulations running on Azure Batch, allowing users to pause and later continue long-running simulations. The implementation adds support for specifying suspend/resume parameters through command-line arguments and handles the path resolution for pickled simulation files in the Azure Batch environment.

• Adds command-line argument parsing to batch-submit to handle suspend/resume parameters
• Modifies simulation loading logic to support resuming from pickled simulations with flexible path handling
• Includes a test scenario file to validate suspend/resume functionality

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
src/tlo/scenario.py	Enhanced simulation loading logic to support resuming from pickled files with environment variable expansion and flexible path handling
src/tlo/cli.py	Added argument parsing to batch-submit command to handle suspend/resume parameters and construct Azure Batch file paths
src/scripts/dev/scenarios/suspend-resume-test.py	Added test scenario for validating suspend/resume functionality

Comments suppressed due to low confidence (1)

src/tlo/cli.py:1

• This code assumes that '--resume-simulation' is always followed by exactly one argument, but doesn't validate that i+1 is within bounds. If '--resume-simulation' is the last argument, accessing scenario_args[i+1] will raise an IndexError.

"""The TLOmodel command-line interface"""

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