Add Open Graph and Twitter meta tags

Added Open Graph and Twitter meta tags for better social media integration.

Author: Z-Arghavan

index.html

@@ -5,6 +5,20 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>BE-OLS</title>
+
+    <!-- Open Graph (for LinkedIn, WhatsApp, etc.) -->
+    <meta property="og:title" content="BE-OLS: Built Environment Ontology Lookup Service">
+    <meta property="og:description" content="A platform for built environment ontology discovery, exploration and evaluation.">
+    <meta property="og:type" content="website">
+    <meta property="og:url" content="https://cyberbuildlab.github.io/BE-OLS/">
+    <meta property="og:image" content="https://cyberbuildlab.github.io/BE-OLS/images/ec3_logo.jpg">
+
+    <!-- Twitter -->
+    <meta name="twitter:card" content="summary_large_image">
+    <meta name="twitter:title" content="BE-OLS: Built Environment Ontology Lookup Service">
+    <meta name="twitter:description" content="A platform for built environment ontology discovery, exploration and evaluation.">
+    <meta name="twitter:image" content="https://cyberbuildlab.github.io/BE-OLS/images/ec3_logo.jpg">
+
     <link rel="stylesheet" href="index.css">
 </head>