[epiphany] Add docs for EphyWebApplicationOptions

[Marge Bot <marge-bot src gnome org>]

commit c21e5dc32885dea968091fd57ed94d6d6a685f30
Author: Phaedrus Leeds <mwleeds protonmail com>
Date:   Tue Nov 30 14:53:15 2021 -0800

    Add docs for EphyWebApplicationOptions
    
    Part-of: <https://gitlab.gnome.org/GNOME/epiphany/-/merge_requests/1037>

 lib/ephy-web-app-utils.h | 10 ++++++++++
 1 file changed, 10 insertions(+)
---
diff --git a/lib/ephy-web-app-utils.h b/lib/ephy-web-app-utils.h
index fb9546ffd..6131157d0 100644
--- a/lib/ephy-web-app-utils.h
+++ b/lib/ephy-web-app-utils.h
@@ -35,6 +35,16 @@ typedef struct {
   char install_date[128];
 } EphyWebApplication;
 
+/**
+ * EphyWebApplicationOptions:
+ * @EPHY_WEB_APPLICATION_NONE: A default web application installed in the
+ *    user's home directory.
+ * @EPHY_WEB_APPLICATION_MOBILE_CAPABLE: Set when the meta tag
+ *    "apple-mobile-web-app-capable" is set. Causes back/forward navigation
+ *    buttons to be hidden.
+ * @EPHY_WEB_APPLICATION_SYSTEM: Set when the web application was installed
+ *    under /usr via deb/rpm rather than in the user's home directory.
+ */
 typedef enum {
   EPHY_WEB_APPLICATION_NONE,
   EPHY_WEB_APPLICATION_MOBILE_CAPABLE,