ci: add install.sh verification workflow

Author: trankimtung

.github/workflows/verify-installer.yml

@@ -0,0 +1,41 @@
+name: Verify Installer
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - install.sh
+      - .github/workflows/verify-installer.yml
+  pull_request:
+    paths:
+      - install.sh
+      - .github/workflows/verify-installer.yml
+
+permissions:
+  contents: read
+
+concurrency:
+  group: verify-installer-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  shellcheck:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+      - run: shellcheck install.sh
+
+  install:
+    timeout-minutes: 10
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
+      - name: Run install.sh
+        run: NEM_INSTALL_DIR="$RUNNER_TEMP/nem-bin" bash install.sh
+      - name: Verify binary
+        run: '"$RUNNER_TEMP/nem-bin/nem" version'