CWG-10 Skeleton C++.

Initial C++ skeleton project.

ci/ubuntu_22_04-base

+FROM ubuntu:22.04
+
+# This Docker image builds the dependencies for the application.
+# It lives on the head of its dependencies.
+
+# Install all build-time dependencies
+RUN export DEBIAN_FRONTEND=noninteractive && \
+	apt-get update && \
+	apt-get install -y \
+		build-essential \
+		clang-format \
+		clang-tidy \
+		cmake \
+		cmake-format \
+		doxygen \
+		gcovr \
+		git \
+		graphviz \
+		libboost-test-dev \
+		ninja-build \
+		python3-breathe \
+	&& \
+	rm -rf /var/lib/apt/lists/*