chore: update authorship and add CREDITS file

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

package.json

@@ -2,7 +2,7 @@
   "name": "solidtime-mcp-server",
   "version": "1.0.0",
   "description": "MCP server for SolidTime time tracking — start/stop timers, manage entries, projects, clients, tags, and tasks",
-  "author": "Manuel",
+  "author": "Danijel",
   "license": "MIT",
   "type": "module",
   "bin": {
@@ -52,6 +52,6 @@
   ],
   "repository": {
     "type": "git",
-    "url": "https://github.com/SwamiRama/solidtime-mcp-server"
+    "url": "https://git.fraqtal.xyz/danijel/solidtime-mcp"
   }
 }