Added package anycallconv (#2670)

Co-authored-by: sls1005 <sls1005@github.com>
Co-authored-by: PhilippMDoerner <philippmdoerner@web.de>

packages.json

@@ -31167,6 +31167,18 @@
     "license": "GPL-3.0-only",
     "web": "https://gitlab.com/prashere/battinfo"
   },
+  {
+    "name": "anycallconv",
+    "url": "https://github.com/sls1005/anycallconv",
+    "method": "git",
+    "tags": [
+      "macro",
+      "sugar"
+    ],
+    "description": "A macro to create special procedural types for parameters.",
+    "license": "MIT",
+    "web": "https://github.com/sls1005/anycallconv"
+  },
   {
     "name": "bcs",
     "url": "https://github.com/C-NERD/nimBcs",