feat: Add DirectPortForward-Go - a high-performance TCP port forwarder

- Implement main functionality for TCP port forwarding with configurable options.
- Introduce JSON-based configuration for local and remote addresses, connection limits, timeouts, and logging levels.
- Add built-in metrics for monitoring active connections, total connections, and data transfer statistics.
- Implement graceful shutdown handling and resource management to prevent leaks.
- Create README.md with detailed usage instructions, configuration examples, and performance tips.

Author: devarashs

.github/workflows/release.yml

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+name: Release
+
+on:
+    push:
+        tags:
+            - "v*.*.*" # Triggers on version tags like v1.0.0, v2.1.3, etc.
+
+permissions:
+    contents: write
+
+jobs:
+    release:
+        name: Create Release
+        runs-on: ubuntu-latest
+        outputs:
+            upload_url: ${{ steps.create_release.outputs.upload_url }}
+            version: ${{ steps.get_version.outputs.version }}
+        steps:
+            - name: Get version from tag
+              id: get_version
+              run: echo "version=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+
+            - name: Create Release
+              id: create_release
+              uses: actions/create-release@v1
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+              with:
+                  tag_name: ${{ github.ref }}
+                  release_name: Release ${{ steps.get_version.outputs.version }}
+                  draft: false
+                  prerelease: false
+
+    build:
+        name: Build Binaries
+        needs: release
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                include:
+                    - goos: linux
+                      goarch: amd64
+                      output: portforward-linux-amd64
+                    - goos: linux
+                      goarch: arm64
+                      output: portforward-linux-arm64
+                    - goos: windows
+                      goarch: amd64
+                      output: portforward-windows-amd64.exe
+                    - goos: darwin
+                      goarch: amd64
+                      output: portforward-darwin-amd64
+                    - goos: darwin
+                      goarch: arm64
+                      output: portforward-darwin-arm64
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@v3
+
+            - name: Set up Go
+              uses: actions/setup-go@v4
+              with:
+                  go-version: "1.21"
+
+            - name: Build binary
+              env:
+                  GOOS: ${{ matrix.goos }}
+                  GOARCH: ${{ matrix.goarch }}
+              run: |
+                  go build -ldflags="-s -w" -o ${{ matrix.output }} main.go
+
+            - name: Upload Release Asset
+              uses: actions/upload-release-asset@v1
+              env:
+                  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+              with:
+                  upload_url: ${{ needs.release.outputs.upload_url }}
+                  asset_path: ./${{ matrix.output }}
+                  asset_name: ${{ matrix.output }}
+                  asset_content_type: application/octet-stream

.gitignore

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+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Code coverage profiles and other test artifacts
+*.out
+coverage.*
+*.coverprofile
+profile.cov
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+go.work.sum
+
+# env file
+.env
+
+# Editor/IDE
+# .idea/
+# .vscode/
+
+config.json