Add workflow allowing publish the index only.

Author: pawchen

.github/workflows/deploy.yml

@@ -11,9 +11,7 @@ on:
 jobs:
 
   publish_index:
-    uses: ./.github/workflows/publish_book.yml
-    with:
-      is_index: true
+    uses: ./.github/workflows/publish_index.yml
 
   setup_array:
     runs-on: ubuntu-slim

.github/workflows/publish_index.yml

@@ -0,0 +1,12 @@
+name: Publish only index to Pages
+
+on:
+  workflow_call:  
+  workflow_dispatch:
+
+jobs:
+  
+  run:
+    uses: ./.github/workflows/publish_book.yml
+    with:
+      is_index: true

converter/converter.slnx

@@ -8,6 +8,7 @@
     <File Path="../.github/workflows/deploy.yml" />
     <File Path="../.github/workflows/optimize.yml" />
     <File Path="../.github/workflows/publish_book.yml" />
+    <File Path="../.github/workflows/publish_index.yml" />
   </Folder>
   <Project Path="generator/generator.csproj" />
   <Project Path="templates/templates.csproj" />