Add functionality for tool to be run as module from command line.

[isaac-tfn]

Describe Changes

Task Checklist

• [ ] Have unittests been added (testing individual functions and their edge cases)
• [ ] Have integration tests been added (if applicable, to test modules of functionality)
• [x] Updated RELEASE.md to reflect changes in PR
• [x] Have new dependencies been added?
  • [x] Have they been added to either requirements.txt or requirements_dev.txt.
  • [x] Have they been added to setup.cfg

[codecov[bot]]

Codecov Report

Patch coverage: 30.76% and project coverage change: -1.38 :warning:

Comparison is base (330ba36) 57.18% compared to head (8f44205) 55.80%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #8 +/- ## ========================================== - Coverage 57.18% 55.80% -1.38% ========================================== Files 8 9 +1 Lines 710 749 +39 ========================================== + Hits 406 418 +12 - Misses 304 331 +27 ``` | [Impacted Files](https://app.codecov.io/gh/Transport-for-the-North/caf.space/pull/8?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Transport-for-the-North) | Coverage Δ | | |---|---|---| | [src/caf/space/\_\_main\_\_.py](https://app.codecov.io/gh/Transport-for-the-North/caf.space/pull/8?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Transport-for-the-North#diff-c3JjL2NhZi9zcGFjZS9fX21haW5fXy5weQ==) | `0.00% <0.00%> (ø)` | | | [src/caf/space/inputs.py](https://app.codecov.io/gh/Transport-for-the-North/caf.space/pull/8?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Transport-for-the-North#diff-c3JjL2NhZi9zcGFjZS9pbnB1dHMucHk=) | `71.71% <46.15%> (-9.11%)` | :arrow_down: |

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