chore: setup codespaces (#637)

Author: Michael Brewer

Diff for: .devcontainer/Dockerfile

@@ -0,0 +1,17 @@
+# See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.187.0/containers/python-3/.devcontainer/base.Dockerfile
+
+# [Choice] Python version: 3, 3.9, 3.8, 3.7, 3.6
+ARG VARIANT="3.9"
+FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
+ENV POETRY_VIRTUALENVS_IN_PROJECT=true
+
+# [Option] Install Node.js
+ARG INSTALL_NODE="true"
+ARG NODE_VERSION="lts/*"
+RUN if [ "${INSTALL_NODE}" = "true" ]; then su vscode -c "umask 0002 && . /usr/local/share/nvm/nvm.sh && nvm install ${NODE_VERSION} 2>&1"; fi
+
+RUN pip3 install -U pip black poetry pre-commit
+
+# [Optional] Uncomment this section to install additional OS packages.
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && apt-get -y install --no-install-recommends bash-completion

Diff for: .devcontainer/devcontainer.json

@@ -0,0 +1,47 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+{
+	"name": "Python 3",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"context": "..",
+		"args": {
+			"VARIANT": "3.9",
+			"INSTALL_NODE": "true",
+			"NODE_VERSION": "lts/*"
+		}
+	},
+	"settings": {
+		"git.enableCommitSigning": true,
+		"editor.formatOnSave": true,
+		"python.pythonPath": "/usr/local/bin/python",
+		"python.languageServer": "Pylance",
+		"python.linting.enabled": true,
+		"python.linting.pylintEnabled": true,
+		"python.formatting.autopep8Path": "/usr/local/py-utils/bin/autopep8",
+		"python.formatting.blackPath": "/usr/local/py-utils/bin/black",
+		"python.formatting.yapfPath": "/usr/local/py-utils/bin/yapf",
+		"python.linting.banditPath": "/usr/local/py-utils/bin/bandit",
+		"python.linting.flake8Path": "/usr/local/py-utils/bin/flake8",
+		"python.linting.mypyPath": "/usr/local/py-utils/bin/mypy",
+		"python.linting.pycodestylePath": "/usr/local/py-utils/bin/pycodestyle",
+		"python.linting.pydocstylePath": "/usr/local/py-utils/bin/pydocstyle",
+		"python.linting.pylintPath": "/usr/local/py-utils/bin/pylint",
+		"python.testing.pytestArgs": [
+			"tests"
+		],
+		"python.testing.unittestEnabled": false,
+		"python.testing.nosetestsEnabled": false,
+		"python.testing.pytestEnabled": true,
+		"python.formatting.provider": "black"
+	},
+	"extensions": [
+		"ms-python.python",
+		"ms-python.vscode-pylance",
+		"littlefoxteam.vscode-python-test-adapter",
+		"ms-azuretools.vscode-docker",
+		"davidanson.vscode-markdownlint",
+		"bungcip.better-toml"
+	],
+	"postCreateCommand": "make dev",
+	"remoteUser": "vscode"
+}