feat: add metatag content (#680)

Co-authored-by: pyansys-ci-bot <[email protected]>

Author: Revathyvenugopal162

doc/changelog.d/680.added.md

@@ -0,0 +1 @@
+add metatag content

src/ansys_sphinx_theme/__init__.py

@@ -453,6 +453,14 @@ def add_sidebar_context(
     context["sidebars"] = sidebar
 
 
+def append_og_site_name(app, pagename, templatename, context, doctree):
+    # Make sure the context already has metatags
+    context["metatags"] = context.get("metatags", "")
+
+    # Append your custom tag
+    context["metatags"] += '\n    <meta property="og:site_name" content="PyAnsys" />'
+
+
 def setup(app: Sphinx) -> Dict:
     """Connect to the Sphinx theme app.
 
@@ -499,6 +507,7 @@ def setup(app: Sphinx) -> Dict:
     app.connect("html-page-context", add_sidebar_context)
     app.connect("html-page-context", update_footer_theme)
     app.connect("html-page-context", fix_edit_html_page_context)
+    app.connect("html-page-context", append_og_site_name)
     app.connect("build-finished", replace_html_tag)
     if use_ansys_search:
         app.connect("build-finished", create_search_index)