Support parameterised generation of pdf in dark-mode

[maxpowis]

https://tex.stackexchange.com/questions/1492/passing-parameters-to-a-document

\definecolor{tagbg-blue}{RGB}{120,180,240}
\definecolor{tagbg-green}{RGB}{120,240,180}
\definecolor{tagtxt-blue}{RGB}{0,0,0.1}
\definecolor{tagtxt-green}{RGB}{0,0.1,0}

\definecolor{linkcolor}{rgb}{0.6,0.8,1}

\definecolor{darkergray}{gray}{0.15}
\pagecolor{darkergray}
\color{white}

Dependencies:

• [x] https://github.com/xu-cheng/latex-action/issues/124

[maxpowis]

Issue created at https://github.com/xu-cheng/latex-action/issues/124 to figure out how to add dark mode build to GitHub actions

[maxpowis]

Completed through creation of tex files for dark vs standard version in the github action for release