feat: add NextForm logo to admin navigation, dashboard header and mobile home screen

apps/admin/public/nextform-logo.svg

@@ -0,0 +1,29 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200">
+  <!-- Background shape -->
+  <defs>
+    <linearGradient id="logoGrad" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#2FB7E8;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#0B7FB3;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+  
+  <!-- Arrow/Chevron background -->
+  <path d="M 140 50 L 180 50 L 140 100 Z" fill="url(#logoGrad)" opacity="0.9"/>
+  <path d="M 60 50 L 100 100 L 60 100 Z" fill="url(#logoGrad)" opacity="0.8"/>
+  
+  <!-- Dumbbell icon -->
+  <g transform="translate(70, 80)">
+    <!-- Left weight -->
+    <rect x="0" y="15" width="8" height="30" fill="white" rx="2"/>
+    <circle cx="4" cy="12" r="6" fill="white"/>
+    <circle cx="4" cy="48" r="6" fill="white"/>
+    
+    <!-- Bar -->
+    <rect x="10" y="20" width="20" height="8" fill="white" rx="2"/>
+    
+    <!-- Right weight -->
+    <rect x="32" y="15" width="8" height="30" fill="white" rx="2"/>
+    <circle cx="36" cy="12" r="6" fill="white"/>
+    <circle cx="36" cy="48" r="6" fill="white"/>
+  </g>
+</svg>