add fontawesome gear to Positron settings links (#72)

* add fontawesome gear to positron links

* newline in _quarto.yml

* duplicate font weight

Author: isabelizimm

_extensions/quarto-ext/fontawesome/_extension.yml

@@ -0,0 +1,7 @@
+title: Font Awesome support
+author: Carlos Scheidegger
+version: 1.2.0
+quarto-required: ">=1.2.269"
+contributes:
+  shortcodes:
+    - fontawesome.lua