Set up project configuration: EditorConfig, Git attributes, devcontainer, Release Drafter, SECURITY.md, and README badges

.github/release-drafter.yml

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+# Config for release-drafter: how to categorize PRs in draft release notes
+# https://github.com/release-drafter/release-drafter
+
+name-template: 'v$RESOLVED_VERSION'
+tag-template: 'v$RESOLVED_VERSION'
+
+categories:
+  - title: '🚀 Features'
+    labels: [feature, enhancement]
+  - title: '🐛 Bug Fixes'
+    labels: [bug, fix]
+  - title: '📚 Documentation'
+    labels: [documentation]
+  - title: '⬆️ Dependencies'
+    labels: [dependencies]
+  - title: 'Other'
+    labels: ['*']
+
+exclude-labels:
+  - skip-changelog

.github/workflows/release-drafter.yml

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+# Drafts release notes from merged PRs when you create a release.
+# Install: add a Release Drafter config (see below), then create a release on GitHub;
+# this workflow will update the draft with categorized PRs.
+name: Release Drafter
+
+on:
+  push:
+    branches: [main, master]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pull-requests: write
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Draft Release
+        uses: release-drafter/release-drafter@v6
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}