Add initial DevContainer setup and configuration files (#1)

- Create .devcontainer/devcontainer.json for container environment setup
- Add postStartCommand.sh for provisioning system dependencies and configuration
- Include .gitignore to exclude task-related files
- Create .taskrc.yml to enable experimental features
- Add Taskfile.yml for task management and configuration
- Set up VSCode settings for integrated terminal using zsh

Co-authored-by: Thomas <thomas.hochstrasser@gmx.net>
Reviewed-on: #1

template/.devcontainer/devcontainer.json

@@ -0,0 +1,51 @@
+{
+    "image": "ubuntu:24.04",
+    "containerEnv": {
+        "CONAN_USR": "", // need to be filled
+        "CONAN_PSW": "" // need to be filled,
+    },
+    "features": {
+        "ghcr.io/devcontainers/features/git:1": {},
+        "ghcr.io/devcontainers/features/git-lfs:1": {},
+        "ghcr.io/devcontainers/features/python:1": {
+        "toolsToInstall": "flake8,autopep8,black,yapf,mypy,pydocstyle,pycodestyle,bandit,pipenv,virtualenv,pytest,pylint,uv,copier,conan"
+    }
+    },
+    "customizations": {
+        "vscode": {
+            "settings": {
+                "git.path": "/usr/bin/git"
+            },
+            "extensions": [
+                "ms-python.python",
+                "ms-python.vscode-pylance",
+                "GitHub.copilot-chat",
+                "njqdev.vscode-python-typehint",
+                "ms-python.debugpy",
+                "mhutchie.git-graph",
+                "ms-vscode.cpptools-themes",
+                "tamasfe.even-better-toml",
+                "moshfeu.compare-folders",
+                "njpwerner.autodocstring",
+                "ms-python.black-formatter",
+                "ms-python.isort",
+                "ms-vscode.live-server",
+                "yzhang.markdown-all-in-one",
+                "bierner.markdown-mermaid",
+                "charliermarsh.ruff",
+                "shardulm94.trailing-spaces",
+                "redhat.vscode-yaml",
+                "ninoseki.vscode-mogami",
+                "twxs.cmake",
+                "cheshirekow.cmake-format",
+                "wholroyd.jinja"
+            ]
+        }
+    },
+    "runArgs": [
+        "--network=host",
+        "-e HOST_UID=$(id -u)",
+        "-e HOST_GID=$(id -g)"
+    ],
+    "postStartCommand": ".devcontainer/postStartCommand.sh"
+}