add devcontainer+pre-commit (#11328)

* add devcontainer support

* chore(devcontainer): install test requirements

* chore: add pre-commit

* fix format of pre-commit config file

* add licenses for the new files

* Apply suggestions from code review

* move requirements-dev.txt to inside .devcontainer

* specify files for ruff

* update CONTRIBUTING.md

* chore(devcontainer): use standard image, no docker build

* docs: format CONTRIBUTING.md (automatic by IDE)

* Update .devcontainer/devcontainer.json

* remove extraneous edits in CONTRIBUTING.md

.devcontainer/setup.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+# Copyright (c) Ansible Project
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+sudo chown -R vscode:vscode /workspace/
+
+pip install -U pip
+pip install -r .devcontainer/requirements-dev.txt
+pip install -r tests/unit/requirements.txt
+
+export ANSIBLE_COLLECTIONS_PATH=/workspace:${ANSIBLE_COLLECTIONS_PATH}
+ansible-galaxy collection install -v -r tests/unit/requirements.yml
+ansible-galaxy collection install -v -r tests/integration/requirements.yml
+
+pre-commit install