add vcpkg.json, and modify ci.yaml to improve usage vcpkg

Now we utilise storing dependencies in `vcpkg.json`, we can use this to
more easily install the dependencies.
Furthermore, we moved cloning vcpkg to `checkout`, which creates clones
with `--depth=1` by default.

vcpkg.json

@@ -0,0 +1,7 @@
+{
+	"$schema": "https://raw.githubusercontent.com/microsoft/vcpkg-tool/main/docs/vcpkg.schema.json",
+	"dependencies": [
+		"glfw3",
+		"libarchive"
+	]
+}