Issue #464 and #177: Bring README into line with epinowcast standards

[seabbs]

… community code

Description

This PR closes #464 and #177. It fixes the badges in line with epinowcast standards, adds back in README text again in line with epinowcast practice, adds a epidist DOI where needed (this required making a pre-release to initialise zenodo.

Checklist

• My PR is based on a package issue and I have explicitly linked it.
• I have included the target issue or issues in the PR title in the for Issue(s) issue-numbers: PR title
• I have read the contribution guidelines.
• I have tested my changes locally.
• I have added or updated unit tests where necessary.
• I have updated the documentation if required.
• My code follows the established coding standards.
• I have added a news item linked to this PR.
• I have reviewed CI checks for this PR and addressed them as far as I am able.

[seabbs]

Note mac CI is failing everywhere in R world due to an issue installing R.

[seabbs]

CI failure is ecosystem-wide R failing to install on mac

[seabbs]

not all the links work with epinowcast/epidist.

[seabbs]

I've made all the links explicit for safety and caught the out of date cmdstanr install instructions

[athowes]

Thanks, good to have a way to install the package off GitHub. About the R universe, is it that we follow some process to update the r-universe version each time we would like to? Is this each release? Is this automated somehow e.g. if we do x.y.z and bump e.g. y? Does the R universe version solve our "big history" issue?

[seabbs]

1. Its automated by github release
2. It doesn't work at the moment due to the big install size

[athowes]

It doesn't work at the moment due to the big install size

It doesn't work as in the R universe install link/code doesn't work? If it doesn't work, I guess we shouldn't be closing that issue?

[seabbs]

it doesn't work due to the git size which we can separately resolve

[athowes]

Suggest may want to clarify the extent to which the R universe install currently works. Don't want users to be frustrated that they try doing what is suggested and it doesn't work, so possibly this could be in the text. Also probably look to make it work sooner rather than later if it doesn't.