Add devcontainer

.devcontainer/Dockerfile

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+FROM mcr.microsoft.com/devcontainers/cpp:1-ubuntu-22.04
+
+ARG REINSTALL_CMAKE_VERSION_FROM_SOURCE="none"
+
+# [Optional] Uncomment this section to install additional vcpkg ports.
+# RUN su vscode -c "${VCPKG_ROOT}/vcpkg install <your-port-name-here>"
+
+# [Optional] Uncomment this section to install additional packages.
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends \
+    build-essential cmake lsb-release wget software-properties-common gnupg
+
+RUN sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)"
+RUN sudo apt-get -y install llvm-18-dev libclang-18-dev

.devcontainer/devcontainer.json

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+// For format details, see https://aka.ms/devcontainer.json. For config options, see the
+// README at: https://github.com/devcontainers/templates/tree/main/src/cpp
+{
+	"name": "C++",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+
+	// Features to add to the dev container. More info: https://containers.dev/features.
+	// "features": {},
+
+	// Configure tool-specific properties.
+	"customizations": {
+		// Configure properties specific to VS Code.
+		"vscode": {
+			"settings": {},
+			"extensions": [
+				"streetsidesoftware.code-spell-checker",
+				"llvm-vs-code-extensions.vscode-clangd",
+				"GitHub.vscode-github-actions"
+			]
+		}
+	}
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "gcc -v",
+
+	// Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
+	// "remoteUser": "root"
+}