Add makefile

[Joffcom]

Adds a Makefile to check Python version, set up venv and install requirements, Also updates contributing guide to cover the new process.

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[github-actions]

Summary

Status	Count
🔍 Total	12
✅ Successful	9
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	3
❓ Unknown	0
🚫 Errors	0
Full Github Actions output

[github-actions]

Overall readability score: 44.72 (🟢 +0)

File	Readability
README.md	62.52 (🟢 +0)

View detailed metrics

🟢 - Shows an increase in readability
🔴 - Shows a decrease in readability

File	Readability	FRE	GF	ARI	CLI	DCRS
README.md	62.52	51.14	9.25	9.9	11.7	8.05
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0

Averages:

	Readability	FRE	GF	ARI	CLI	DCRS
Average	44.72	36.11	11.54	14.54	14.21	8.39
	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0	🟢 +0

View metric targets

Metric	Range	Ideal score
Flesch Reading Ease	100 (very easy read) to 0 (extremely difficult read)	60
Gunning Fog	6 (very easy read) to 17 (extremely difficult read)	8 or less
Auto. Read. Index	6 (very easy read) to 14 (extremely difficult read)	8 or less
Coleman Liau Index	6 (very easy read) to 17 (extremely difficult read)	8 or less
Dale-Chall Readability	4.9 (very easy read) to 9.9 (extremely difficult read)	6.9 or less

[evilnick]

Looks promising - will have to test it out a few places

[StarfallProjects]

@Joffcom couple of questions:

1. Would need people to install Make (it's not there by default on Windows at least)
2. Potentially introduces confusion, if we're encouraging users to use make run, but in practice most of the time they'll need varied commands for testing depending on how much/how slow they want to build.

What's the benefit of using the Make file and adding another tool folks need to install? Happy to test it and use it if it's worth it.

[Joffcom]

I think back when I added it there was some confusion on getting up and running, this gives us a consistent approach to it but would require make to be available.

There may be a better way to handle this

[StarfallProjects]

@Joffcom I'm torn because I'm aware using makefiles on Python projects is a pretty standard good practice. Equally, it's one more thing to install, and I'm wondering if we can just make the README / internal docs clearer? Either way we have to handle supporting OS differences (I don't think the current commands will activate venv on Windows, for instance)