Deploy haddock to github pages

Signed-off-by: Sam Foo <sam.foo@iohk.io>

.github/workflows/haddock.yml

@@ -0,0 +1,27 @@
+name: "Build and Deploy to Github Pages"
+on:
+  push:
+    branches:
+      - master
+jobs:
+  build-haddock-site:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    environment:
+      name: github-pages
+    steps:
+      - uses: actions/checkout@v3
+      - uses: nixbuild/nix-quick-install-action@v21
+        with: 
+          nix_conf: |
+            experimental-features = nix-command flakes
+            accept-flake-config = true 
+      - name: Build haddock site
+        run: |
+          nix build .#combined-plutus-haddock
+          mkdir dist
+          cp -RL ./result/share/doc/* ./dist/
+      - uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: dist

nix/cells/plutus/packages/combined-plutus-haddock.nix

@@ -24,12 +24,9 @@ cell.library.combine-haddock {
 
         * "PlutusTx": Compiling Haskell to PLC (Plutus Core; on-chain code).
         * "PlutusTx.Prelude": Haskell prelude replacement compatible with PLC.
-        * "Plutus.Contract": Writing Plutus apps (off-chain code).
-        * "Ledger.Constraints": Constructing and validating Plutus
-          transactions. Built on "PlutusTx" and "Plutus.Contract".
-        * "Ledger.Typed.Scripts": A type-safe interface for spending and
-          producing script outputs. Built on "PlutusTx".
-        * "Plutus.Trace.Emulator": Testing Plutus contracts in the emulator.
+        * "PlutusCore": Programming language in which scripts on the Cardano blockchain are written.
+        * "PlutusIR": Intermediate Representation language that compiles to Plutus Core.
+        * "UntypedPlutusCore": On-chain Plutus code.
     '';
   };
 }