feat!: Separate www into www/blog and www/private

Now the private content is stored as a git submodule.
This means I can keep that repo's source private, but still use it in
the build product.
The build product (website) relies on HTTP basic authentication, so
access control is maintained throughout the SDLC.

src/recipes/earth-day/compote.md

@@ -0,0 +1,12 @@
+*Source: Matt*
+
+## Ingredients
+- One pack raspberries
+- One pack blueberries
+- One pack blackberries
+- 3 tbsp manuka honey
+
+## Instructions
+1. Add all berries to a pot, fill with water until submerged.
+2. Bring to a boil, simmer for 20 minutes.
+3. Strain or blend, add to pitcher, mix in honey while hot.