feat(docs): share initial retro funding writeups (#3061)

Author: ccerv1

apps/docs/docs/contribute-models/retrofunding/_category_.json

@@ -0,0 +1,8 @@
+{
+  "label": "Create Metrics for Retro Funding",
+  "position": 5,
+  "link": {
+    "type": "doc",
+    "id": "index"
+  }
+}

…s/docs/contribute-models/retrofunding.md …/contribute-models/retrofunding/index.mdapps/docs/docs/contribute-models/retrofunding.md renamed to apps/docs/docs/contribute-models/retrofunding/index.md apps/docs/docs/contribute-models/retrofunding.md renamed to apps/docs/docs/contribute-models/retrofunding/index.md

@@ -1,6 +1,6 @@
 ---
 title: Create Metrics for Retro Funding
-sidebar_position: 5
+sidebar_position: 1
 ---
 
 :::info