Add the script for updating the submodules

.github/workflows/shellcheck.yml

@@ -0,0 +1,18 @@
+name: "TestCPP Shellcheck"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  shellcheck:
+    name: Shellcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run ShellCheck
+        uses: ludeeus/action-shellcheck@master
+        with:
+          ignore_names: llvm.sh # External file

3rdparty/boost-update.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+NEW_BOOST_VERSION="$1"
+CURRENT_BOOST_COMMIT_SHA="$(git rev-parse HEAD)"
+
+git checkout "boost-$NEW_BOOST_VERSION"
+git cherry-pick "$CURRENT_BOOST_COMMIT_SHA"
+git commit -am "Apply CMake changes to enable project usage as git submodule directly."
+git tag -s "boost-$NEW_BOOST_VERSION-cmake-git-submodule" --file=../cmake-git-submodule.tag.msg
+git push --tags