Workflow build improvments

[fionaEyoung]

Putting this of for now.

• Convert to docx using pandoc. Currently there are issues with setting the working directory / pointing pandoc to included files and figures that aren't in the pandoc working directory
• Add PDF builds to a tagged release. Only upload as workflow artefacts for intermediate tags (vX.x.x) and upload as release for minor tags (vX.x)

[fionaEyoung]

Re: pandoc relative directories see jgm/pandoc#3752; try with pandoc --resource-path

Need to fix pandoc bib files globbing

from workflow

Run echo "files=$(printf '--bibliography %s ' src/bibs/*.bib)" > $GITHUB_OUTPUT
/home/runner/work/_temp/2dc9893b-8a72-43e8-86f7-ce8d2a6b4a3a.sh: line 1: printf: --: invalid option
printf: usage: printf [-v var] format [arguments]

[fionaEyoung]

• pandoc --resource-path only works for figures -> can resolve Could not fetch resource ... but not Could not load include file ...
• rebase_relative_paths extension not supported for latex

It appears that using pandoc on complex latex structures with \includeed files only supports calling pandoc from the Main.tex directory.
However, the pandoc action / container doesn't have a working directory parameter, and the GH actions working-directory option doesn't work for uses steps.

Solution as described more generally in pandoc/pandoc-action-example#11: change docker container entrypoint and cd before running pandoc.