Add PSL_catalog.json (PolicyEngine#4149)

Fixes PolicyEngine#4148

PSL_catalog.json

@@ -0,0 +1,24 @@
+{
+    "name": "PolicyEngine US",
+    "img": "https://github.com/PolicyEngine/policyengine-app/blob/master/src/images/logos/policyengine/banners/facebook.png?raw=true",
+    "banner_title": "PolicyEngine US",
+    "banner_subtitle": "A tax-benefit microsimulation model for the United States.",
+    "detailed_description": "PolicyEngine US models rules for tax and benefit programs federally, in states, and in local governments. It also includes procedures to generate and enhance microdata for economic policy analysis.",
+    "policy_area": "Policy Reform, Tax Analysis",
+    "geography": "US",
+    "language": "Python",
+    "maintainers": [
+      {
+        "name": "Max Ghenis",
+        "image": "https://policyengine.org/static/media/max-ghenis.536762d4b2439bf591f5.png",
+        "link": "mailto:[email protected]"
+      }
+    ],
+    "links": {
+      "code_repository": "https://github.com/policyengine/policyengine-us",
+      "user_documentation": "https://policyengine.github.io/policyengine-us/",
+      "contributor_documentation": "https://github.com/PolicyEngine/policyengine-us/blob/master/README.md",
+      "webapp": "https://policyengine.org/us",
+      "recent_changes": "https://github.com/PolicyEngine/policyengine-us/blob/master/CHANGELOG.md"
+    }
+}

changelog_entry.yaml

@@ -0,0 +1,4 @@
+- bump: patch
+  changes:
+    added:
+      - PSL_catalog.json.