Add GitHub Packages publishing workflow and documentation

.github/workflows/publish-to-github-packages.yml

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+name: Publish to GitHub Packages
+
+on:
+  release:
+    types: [created, published]
+  workflow_dispatch:
+
+jobs:
+  build-and-publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.9'
+
+      - name: Install build dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install build twine
+
+      - name: Build distribution packages
+        run: python -m build
+
+      - name: Publish to GitHub Packages
+        run: |
+          python -m twine upload dist/* \
+            --repository-url https://python.pkg.github.com/${{ github.repository_owner }} \
+            --username ${{ github.actor }} \
+            --password ${{ secrets.GITHUB_TOKEN }} \
+            --verbose

GITHUB_PACKAGES.md

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+# GitHub Packages Configuration Guide
+
+## Publishing to GitHub Packages
+
+This project is configured to automatically publish to GitHub Packages when a release is created.
+
+### Automatic Publishing (GitHub Actions)
+
+When you create a release on GitHub (using git tag), the workflow in `.github/workflows/publish-to-github-packages.yml` will:
+
+1. Build the Python package
+2. Publish to GitHub Packages Python registry
+3. Make it available at: `https://github.com/Stalin-143/ExecuTrace/packages`
+
+### Creating a Release
+
+```bash
+git tag -a v1.0.1 -m "Version 1.0.1"
+git push origin v1.0.1
+```
+
+Or use GitHub's web interface to create a release from an existing tag.
+
+### Manual Publishing to GitHub Packages
+
+If you need to publish manually:
+
+```bash
+# Build the package
+python -m build
+
+# Install twine if not already installed
+pip install twine
+
+# Publish to GitHub Packages
+python -m twine upload dist/* \
+  --repository-url https://python.pkg.github.com/Stalin-143 \
+  --username YOUR_GITHUB_USERNAME \
+  --password YOUR_GITHUB_TOKEN
+```
+
+### GitHub Token
+
+You'll need a GitHub Personal Access Token with `write:packages` scope:
+
+1. Go to GitHub Settings → Developer settings → Personal access tokens
+2. Generate new token with `write:packages` scope
+3. Use token as password in twine commands
+
+### Installing from GitHub Packages
+
+Others can install your package from GitHub Packages:
+
+```bash
+# Create a .netrc file in your home directory
+cat > ~/.netrc << EOF
+machine python.pkg.github.com
+login YOUR_USERNAME
+password YOUR_TOKEN
+EOF
+
+# Then install
+pip install --index-url https://python.pkg.github.com/Stalin-143 exectrace-workflow
+```
+
+### Workflow Details
+
+The GitHub Actions workflow automatically:
+- Runs on release creation
+- Can be manually triggered via `workflow_dispatch`
+- Uses `GITHUB_TOKEN` for authentication
+- Requires no additional secrets setup
+
+---
+
+**Current Version:** 1.0.1  
+**Repository:** https://github.com/Stalin-143/ExecuTrace  
+**Packages:** https://github.com/Stalin-143/ExecuTrace/packages