feat: add .github folder and changelog GHA

resolves #5

.github/README.md

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+# GitHub Folder
+
+> [!NOTE]
+> The `.github` directory contains files that are used to configure GitHub for the repository.
+
+The `.github` directory contains the following files:
+
+- [`dependabot.yml`](./dependabot.yml): A default `dependabot.yml` file that can be used to configure Dependabot for the repository.
+
+## Workflows
+
+- [`workflows/changelog.yml`](./workflows/changelog.yml): A default repository GitHub Action Workflow to automate the generation of the project's [`CHANGELOG.md`](./../CHANGELOG.md).

.github/dependabot.yml

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+# No Clocks, LLC Default `dependabot.yml` Configuration File
+version: 2
+updates:
+  # GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: ".github/workflows"
+    schedule:
+      interval: "daily"

.github/workflows/changelog.yml

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+name: Automate Changelog
+on:
+  workflow_dispatch:
+  push:
+  pull_request:
+    branches:
+      - main
+jobs:
+  changelog:
+    name: Generate Changelog
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Run Git Cliff
+        uses: tj-actions/git-cliff@v1.5.0
+        id: git-cliff
+        with:
+          args: "--verbose"
+          output: "CHANGELOG.md"
+          template-config: https://raw.githubusercontent.com/noclocks/.github/main/workflow-templates/cliff.template.toml
+      - name: Print Changelog
+        id: print-changelog
+        run: |
+          cat "CHANGELOG.md"
+      # Commit and push the updated changelog, IF not a pull request
+      - name: Commit and Push Changelog
+        if: github.event_name != 'pull_request'
+        run: |
+          git config user.name 'github-actions[bot]'
+          git config user.email 'github-actions[bot]@users.noreply.github.com'
+          set +e
+          git add CHANGELOG.md
+          git commit -m "[chore]: update changelog"
+          git push https://${{ secrets.GITHUB_TOKEN }}@github.com/${GITHUB_REPOSITORY}.git "main"