fix: Added preview image, title and description to preview card of the website

spectragraph-app/index.html

@@ -8,7 +8,20 @@
       </script> -->
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-
+
+    <!-- Open Graph Meta Tags  -->
+     <meta property="og:title" content="SpectraGraph" />
+     <meta property="og:description" content="Graph based investigation manager | A visual investigation platform that maps threats, uncovers hidden links, and helps analysts investigate faster through an interactive graph workspace" />
+     <meta property="og:type" content="website" />
+     <meta property="og:url" content="https://sr-857.github.io/SpectraGraph/landing" />
+     <meta property="og:image" content="https://sr-857.github.io/SpectraGraph/landing/preview-image.png" />
+
+     <!-- Twitter Meta Tags -->
+      <meta name="twitter:card" content="summary_large_image" />
+      <meta name="twitter:image" content="https://sr-857.github.io/SpectraGraph/landing/preview-image.png" />
+      <meta name="twitter:title" content="SpectraGraph" />
+      <meta name="twitter:description" content="Graph based investigation manager | A visual investigation platform that maps threats, uncovers hidden links, and helps analysts investigate faster through an interactive graph workspace" />
+
     <!-- Google Fonts - Oxanium -->
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>