Added GitHub Actions for script and markdown linting

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI Pipeline
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  shellcheck:
+    name: Shell Script Linter
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Install ShellCheck
+        run: sudo apt-get install -y shellcheck
+
+      - name: Run ShellCheck on scripts
+        run: shellcheck Scripts/* Scripts/Setupscripts/* || exit 1
+
+  markdownlint:
+    name: Markdown Linter
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v2
+
+      - name: Install markdownlint-cli
+        run: npm install -g markdownlint-cli
+
+      - name: Run MarkdownLint
+        run: markdownlint **/*.md || exit 1