Add .gitignore file

Co-authored-by: Ona <no-reply@ona.com>

.gitignore

@@ -0,0 +1,31 @@
+# Binaries
+kport
+ssh-port-forwarder
+
+# Go build artifacts
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool
+*.out
+
+# Go workspace file
+go.work
+
+# IDE files
+.vscode/
+.idea/
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Temporary files
+*.tmp
+*.temp