feat: download images from a webpage with wget

knowledge base/wget.md

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+# `wget`
+
+## Table of contents <!-- omit in toc -->
+
+1. [TL;DR](#tldr)
+1. [Further readings](#further-readings)
+1. [Sources](#sources)
+
+## TL;DR
+
+```sh
+# Download all the pictures from a webpage.
+# Limit yourself to JPG files from the domain storing them.
+# Save them in a single directory.
+wget 'https://www.theskyfolk.com/photo' -Hcr -D'images.squarespace-cdn.com' \
+  --e'robots=off' -t'3' -w'1' -A'jpg' -nc -nd -np --xattr
+wget 'https://www.theskyfolk.com/photo' \
+  --span-hosts --continue --recursive \
+  --domains 'images.squarespace-cdn.com' --execute 'robots=off' \
+  --tries '3' --wait '1' \
+  --accept 'jpg' --no-clobber --no-directories --no-parent --xattr
+```
+
+## Further readings
+
+- [Manual]
+
+## Sources
+
+All the references in the [further readings] section, plus the following:
+
+- [Ský Fólk]
+
+<!--
+  References
+  -->
+
+<!-- Upstream -->
+[manual]: https://www.gnu.org/software/wget/manual/wget.html
+
+<!-- In-article sections -->
+[further readings]: #further-readings
+
+<!-- Others -->
+[ský fólk]: https://www.theskyfolk.com