add PSL catalog json

PSL_catalog.json

@@ -0,0 +1,29 @@
+{
+    "name": "OG-ZAF",
+    "img": "https://avatars.githubusercontent.com/u/44992936?s=200&v=4",
+    "banner_title": "OG-ZAF",
+    "banner_subtitle": "An overlapping-generations macroeconomic model for evaluating fiscal policy in South Africa",
+    "detailed_description": "OG-ZAF is an overlapping-generations (OG) model that allows for dynamic general equilibrium analysis of fiscal policy for South Africa. OG-ZAF is built on the OG-Core framework. The model output includes changes in macroeconomic aggregates (GDP, investment, consumption), wages, interest rates, and the stream of tax revenues over time. Regularly updated documentation of the model theory--its output, and solution method--and the Python API is available at https://pslmodels.github.io/OG-Core and documentation of the specific South African calibration of the model will be available soon.",
+    "policy_area": "Fiscal policy, Macroeconomics, Demographics",
+    "geography": "South Africa",
+    "language": "Python",
+    "maintainers": [
+        {
+            "name": "Richard W. Evans",
+            "image": "https://github.com/rickecon.png",
+            "link": "https://github.com/rickecon"
+        },
+        {
+            "name": "Marcel LaFleur",
+            "image": "https://avatars.githubusercontent.com/u/231228?v=4",
+            "link": "https://github.com/SeaCelo"
+        },
+    ],
+    "links": {
+      "code_repository": "https://github.com/EAPD-DRB/OG-ZAF",
+      "user_documentation": "https://eapd-drb.github.io/OG-ZAF/content/intro/intro.html",
+      "contributor_documentation": "https://eapd-drb.github.io/OG-ZAF/content/contributing/contributor_guide.html",
+      "webapp": "",
+      "recent_changes": "https://github.com/EAPD-DRB/OG-ZAF/blob/main/CHANGELOG.md"
+    }
+}