[infra,devops] How to add the 'matomo tracking id'

The Matomo Software

https://matomo.org/

Matomo tracking-id

the javascript-snippet should go into the birdrecoveries/ui.R

1. fetch the tracking-id and javascript.snippet from matomo.
2. paste the snippet into the file matomo.html
3. place the matomo.html-file into the dir inst/shiny-apps/birdrecoveries (side-by-side with ui.R)
4. edit the ui.R code, paste tags$head(includeHTML(("matomo.html"))) into the 'dashboardBody'