ci: add CI/CD pipelines for GitHub and Jenkins

- Includes `Jenkinsfile` pipeline for semantic release (`.releaserc`)
- GitHub actions workflow to validate the Helm Chart

.github/workflows/helm-lint.yml

@@ -0,0 +1,27 @@
+name: Helm Chart Validation
+
+on:
+  workflow_dispatch:
+  pull_request:
+    branches: [master]
+
+jobs:
+  lint:
+    name: Helm Chart Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Linting the Helm Chart
+        run: |
+          pwd
+          helm lint .
+        shell: bash
+
+      - name: Generate a template
+        run: |
+          pwd
+          cd ../
+          helm template webapp-helm-chart
+        shell: bash

.releaserc

@@ -0,0 +1,51 @@
+{
+  "branches": ["master"],
+  "repositoryUrl": "https://github.com/csye7125-fall2023-group05/infra-helm-chart.git",
+  "plugins": [
+    "@semantic-release/commit-analyzer",
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/changelog",
+    [
+      "semantic-release-helm",
+      {
+        "chartPath": "./",
+        "onlyUpdateVersion": true
+      }
+    ],
+    [
+      "@semantic-release/git", {
+      "assets": [
+        {"path": "./Chart.yaml"},
+        {"path": "./CHANGELOG.md"}
+      ]
+    }],
+    "@semantic-release/github"
+  ],
+  "release": {
+    "verifyConditions": {
+      "path": ["@semantic-release/changelog", "@semantic-release/github", "@semantic-release/git"]
+    },
+    "analyzeCommits": [
+      "@semantic-release/commit-analyzer"
+    ],
+    "generateNotes": [
+      "@semantic-release/release-notes-generator", {
+        "preset": "angular",
+        "writerOpts": {
+          "commitsSort": ["header"]
+        }
+      }
+    ],
+    "prepare": [
+      "semantic-release-helm",
+      "@semantic-release/git",
+      {
+        "path": "@semantic-release/changelog",
+        "changelogFile": "CHANGELOG.md"
+      }
+    ],
+    "publish": "@semantic-release/github",
+    "success": "@semantic-release/github",
+    "fail": "@semantic-release/github"
+  }
+}

Jenkinsfile

@@ -0,0 +1,36 @@
+pipeline {
+  agent any
+  tools { nodejs "node" }
+  environment {
+    GH_TOKEN = credentials('jenkins-pat')
+  }
+  stages {
+    stage ('Checkout Code') {
+      steps {
+        cleanWs()
+        checkout scm
+      }
+    }
+    stage ('Release with SemVer') {
+      when {
+        branch 'master'
+      }
+      steps {
+          sh '''
+          npm install @semantic-release/commit-analyzer
+          npm install @semantic-release/release-notes-generator
+          npm install @semantic-release/changelog
+          npm install semantic-release-helm
+          npm install @semantic-release/git
+          npm install @semantic-release/github
+          npx semantic-release
+          '''
+      }
+    }
+  }
+  post {
+    always {
+      echo 'Pipeline complete'
+    }
+  }
+}