Better getting started with Julia documentation

[SamuelBrand1]

          Also, we have cover _some_ of this in the `EpiAware` `README` but opinions on nice Julia set ups e.g. having `Revise.jl` `TestEnv.jl` etc in the basic environment of your local Julia installation.

Originally posted by @SamuelBrand1 in #276 (comment)

Splitting this out because its separate to opinions of EpiAware workflow using other packages.

[seabbs]

@SamuelBrand1 do you think you have some capacity to work on this in the near term? I think it might be best coming from you in the first instance.

I think the key is want to give the bare bones of tips and link out to any existing resources that exist vs trying to write everything from scratch

[SamuelBrand1]

Yes, but it'll be fourth on priority list. It shouldn't take long though. When I get brain fog on a dev problem I'll go on this.