Add docs deployment to CI

Author: nikita-volkov

.github/workflows/deploy-docs-to-pages.yaml

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+name: Deploy Haddock Documentation to GitHub Pages
+
+on:
+  push:
+    branches:
+      - master
+
+# Prevent overlapping publishes on rapid pushes
+concurrency:
+  group: deploy-docs-to-pages
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build-docs:
+    uses: nikita-volkov/haskell-hackage-lib-github-actions-workflows/.github/workflows/deploy-docs-to-github-pages.yaml@v4
+    secrets: inherit

README.md

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+# hasql-pool
+
+[![Hackage](https://img.shields.io/hackage/v/hasql-pool.svg)](https://hackage.haskell.org/package/hasql-pool)
+[![Continuous Haddock](https://img.shields.io/badge/haddock-master-blue)](https://nikita-volkov.github.io/hasql-pool/)
+
+Extension for [hasql](https://hackage.haskell.org/package/hasql) providing a specialized connection pool implementation with extensive monitoring capabilities.