Create vignettes for commonly asked questions

[florianm]

Feature

To provide a running start for data analysts, create for each question listed below:

• a Rmd template with explanations in comments
• one vignette with a worked example
• en entry in the _pkgdown.yml config to display the vignette under the heading "Analyse TSC data"

Vignettes

• How many birds rose in conservation listing status in WA in the past X years?
• Which conservation significant plants have been recorded in DBCA District X?
• What is the predicted habitat for a taxon known under taxonomic name X?
• Generate a formatted PDF and a plain CSV spreadsheet of threatened flora and fauna names in WA.
• Generate an interactive map of all accepted occurrences in area X.
• List conservation documents coming up for review within the next 6 months.
• List occurrences flagged for review.