ci(github): add continuous integration and deployment workflows

Introduced new GitHub Actions workflows for continuous integration and deployment. The `CI` workflow is triggered on push to the main branch and pull requests, focusing on build, lint, and test sequences. The `Publish` workflow handles deployment to both private and public npm registries upon tagging and includes steps to create GitHub releases. These workflows are designed to improve the automation and reliability of code integration and deployment processes.

.github/workflows/ci.yml

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+name: CI
+permissions:
+  id-token: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - main
+    paths: 
+      - "packages/**"
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  ci:
+    name: Continuous Integration & Deployment to Private Registry
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: pnpm/action-setup@v3
+        with:
+          version: 9.x
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          cache: "pnpm"
+          registry-url: "https://registry.npmjs.org/"
+
+      # --- Install, build, and test.
+      - run: pnpm install
+      - run: pnpm build
+      - run: pnpm lint:ci
+      - run: pnpm test:ci
+
+      # --- Publish to private registry on main branch.
+      # - if: github.event_name == 'push'
+      #   run: pnpm publish:ci --registry https://npm.hsjm.dev --tag next
+      #   env:
+      #     NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN_PRIVATE}}

.github/workflows/publish.yml

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+name: Publish
+permissions:
+  id-token: write
+  contents: write
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+  deploy:
+    name: Deployment to Private Registry & NPM
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: pnpm/action-setup@v3
+        with:
+          version: 9.x
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20.x
+          cache: "pnpm"
+          registry-url: "https://registry.npmjs.org/"
+
+      # --- Install, build, and test.
+      - run: pnpm install
+      - run: pnpm build
+      - run: pnpm lint:ci
+      - run: pnpm test:ci
+
+      # --- Publish to private registry on main branch.
+      # - run: pnpm publish:ci --registry https://npm.hsjm.dev --tag latest
+      #   env:
+      #     NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN_PRIVATE}}
+
+      # --- Publish to NPM registry on main branch. (Only on tags)
+      - run: pnpm publish:ci --registry https://registry.npmjs.org --tag latest
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+          NPM_CONFIG_PROVENANCE: true
+
+      # --- If all goes well, create a release on GitHub.
+      - run: npx changelogithub --no-group
+        continue-on-error: true
+        env:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}