feat: initial commit at project root

.gitignore

@@ -0,0 +1,30 @@
+# Binaries and build outputs
+/voice-call-service
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+*.test
+*.out
+
+# Environment variables containing secrets
+.env
+.env.local
+.env.production
+.env.development
+
+# Sandbox isolation caches
+.go/
+.gocache/
+.tmp/
+.home/
+
+# IDE and OS settings
+.DS_Store
+.vscode/
+.idea/
+
+# Node.js dependencies
+node_modules/
+npm-debug.log