Setup common R challenges FAQ/guide section (#135)

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Co-authored-by: Luke W. Johnston <lwjohnst86@users.noreply.github.com>

Author: Aastedet

support/common-r-challenges/index.md

@@ -0,0 +1,24 @@
+---
+title: "Common challenges and solutions to working with R and register data"
+description: |
+  A list of common challenges facing researchers new to working with R, DST's servers or Parquet/DuckDB data and solutions to overcome these.
+author:
+  - name: Anders Aasted Isaksen
+    affiliations: 
+      - name: Steno Diabetes Center Aarhus
+        url: https://stenoaarhus.dk
+---
+
+{{< include ../../includes/_wip.md >}}
+
+## Aims
+
+This document is a joint effort between junior (and slightly more
+senior) researchers working with R on the servers of Statistics Denmark.
+This guide was created to address frequently encountered challenges in a
+public space for everyone to benefit from---and contribute to. Many of
+these challenges are related to the register data infrastructure on
+Steno Aarhus' project database on Statistics Denmark, e.g. how to
+utilise Parquet files and `DuckDB`/`duckplyr`---but all commonly
+encountered data processing/analysis challenges are within the scope of
+this guide.