Add Publish to GitHub Packages github workflow

[hossain-khan]

As mentioned in #13 (comment) - there needs to be publish workflow to publish the project to GitHub Packages

Here is earlier suggestion proved.

name: Publish to GitHub Packages

on:
  push:
    tags:
      - 'v*'   # Triggers on version tags like v1.0.0
  workflow_dispatch:  # Allows manual trigger

jobs:
  publish:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Set up JDK
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '17'    # Match your project's Java version

      - name: Cache Gradle packages
        uses: actions/cache@v4
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}

      - name: Grant execute permission for Gradle wrapper
        run: chmod +x ./gradlew

      - name: Publish to GitHub Packages
        env:
          USERNAME: ${{ github.actor }}
          TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: ./gradlew publish

Create the workflow and add inline comments in the workflow on how to setup the configuration needed for this workflow to run.