Add Program Integrity Alliance MCP Server (#158)

* PIA MCP Server initial commit

* Adjusted icon and text

* Fixed secret naming convention based on running CI

Author: dividor

servers/pia/server.yaml

@@ -0,0 +1,21 @@
+name: pia
+image: mcp/pia
+type: server
+meta:
+    category: ai
+    tags:
+        - ai
+about:
+    title: Program Integrity Alliance 
+    description: |-
+        An MCP server to help make U.S. Government open datasets AI-friendly. 
+
+    icon: http://programintegrity.org/wp-content/uploads/2025/08/docker-mcp-pia-icon-512.png
+source:
+    project: https://github.com/Program-Integrity-Alliance/pia-mcp-local
+config:
+    description: Configure the connection to Program Integrity Alliance (PIA) MCP Server. You can get a key here https://mcp.programintegrity.org/register
+    secrets:
+        - name: pia.api-key
+          env: PIA_API_KEY
+          example: pia_5cFd9jtG3zbY4VpREewTP17uzdfnvMt8_3m778O2dv8