Add GitHub workflow for updating notkesto-site repo

.github/workflows/update-site.yml

@@ -0,0 +1,19 @@
+name: Update site with latest commit
+
+on:
+  workflow_dispatch: ~
+  push:
+    branches:
+      - main
+
+jobs:
+  update-site:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger submodule update in site repo
+        run: |
+          curl -X POST \
+            -H "Authorization: Bearer ${{ secrets.SITE_REPO_PAT }}" \
+            -H "Accept: application/vnd.github.everest-preview+json" \
+            -d '{"event_type": "content-update"}' \
+            https://api.github.com/repos/camargomau/notkesto-site/dispatches

.gitignore

@@ -1,5 +1,7 @@
 *
 !.gitignore
+!/.github
+!/.github/**
 !/Assets/
 !/Assets/**
 !/Jangul/