Add new anonymous page hooks

- ADD_CSS_ANONYMOUS_PAGE
- ADD_JAVASCRIPT_ANONYMOUS_PAGE
- ADD_JAVASCRIPT_MODULE_ANONYMOUS_PAGE
- ADD_HEADER_TAG_ANONYMOUS

setup.php

@@ -200,6 +200,31 @@ function plugin_init_example() {
       ],
    ];
 
+   // Add specific files to add to the header into anonymous page : javascript or css
+   $PLUGIN_HOOKS[Hooks::ADD_CSS_ANONYMOUS_PAGE]['example']        = 'example_anonymous.css';
+   $PLUGIN_HOOKS[Hooks::ADD_JAVASCRIPT_MODULE_ANONYMOUS_PAGE]['example']        = 'mymodule_anonymous.js';
+   $PLUGIN_HOOKS[Hooks::ADD_JAVASCRIPT_ANONYMOUS_PAGE]['example']        = 'example_anonymous.js';
+
+   // Add specific tags to the header into anonymous page
+   $PLUGIN_HOOKS[Hooks::ADD_HEADER_TAG_ANONYMOUS_PAGE]['example'] = [
+      [
+         'tag' => 'meta',
+         'properties' => [
+            'name'    => 'robots',
+            'content' => 'noindex, nofollow',
+         ]
+      ],
+      [
+         'tag' => 'link',
+         'properties' => [
+            'rel'   => 'alternate',
+            'type'  => 'application/rss+xml',
+            'title' => 'The company RSS feed',
+            'href'  => 'https://example.org/feed.xml',
+         ]
+      ],
+   ];
+
    // request more attributes from ldap
    //$PLUGIN_HOOKS['retrieve_more_field_from_ldap']['example']="plugin_retrieve_more_field_from_ldap_example";