Rename the design-system submodule -> base

.gitmodules

@@ -1,6 +1,6 @@
-[submodule "themes/design-system"]
-	path = themes/design-system
-	url = nutmeg.erynwells.me:git/hugo-erynwells-design-system.git
 [submodule "themes/blog"]
 	path = themes/blog
 	url = nutmeg.erynwells.me:git/hugo-theme-erynwells-blog.git
+[submodule "themes/base"]
+	path = themes/base
+	url = nutmeg.erynwells.me:git/hugo-theme-erynwells-base.git

hugo.yaml

@@ -3,9 +3,12 @@ languageCode: en-us
 title: Test Site
 
 theme:
-  - design-system
   - blog
+  - base
 
-modules:
+module:
+  hugoVersion:
+    extended: false
+    min: "0.116.0"
   imports:
-    - path: "design-system"
+    - path: base