Add support pages section and index

docs/.nav.yml

@@ -6,4 +6,5 @@ nav:
   - stagelink
   - policies
   - handbook
+  - support
   - contact

docs/support/.nav.yml

@@ -0,0 +1,3 @@
+title: Support
+nav:
+  - index.md

docs/support/index.md

@@ -0,0 +1,11 @@
+# Get Support for StarCat Products
+
+!!! abstract "Placeholder Page"
+    This is a placeholder page. Please see the site navigation for any sub-pages that exist.
+
+---
+
+!!! example "Work in Progress"
+    This page is not complete, and is subject to change.
+
+    Want to help with this page? Please see [:octicons-arrow-right-16: Editing this site](https://about.starcat.systems/editing/) and the [:simple-forgejo: Git repo](https://git.starcat.systems/starcatsys/about_docs) for this site.