Add CPC update site

Author: Jay2owe

sites.yml

@@ -548,6 +548,15 @@ sites:
     maintainers:
       - "[Christopher Schmied](mailto:christopher.schmied@fht.org)"
 
+  - name: "Centre-Particle Coincidence (CPC)"
+    id: "Center-Particle-Coincidence"
+    url: "https://sites.imagej.net/Center-Particle-Coincidence/"
+    description: >-
+      [Centre-Particle Coincidence](https://github.com/Jay2owe/CPC) is an
+      object-based colocalization plugin for label images and ROI sets.
+    maintainers:
+      - "[Jamie Malcolm](https://github.com/Jay2owe)"
+
   - name: "CiliaQ"
     id: "CiliaQ"
     url: "https://sites.imagej.net/CiliaQ/"