Add header and footer templates for report generation

- Created a footer template with contact information and page number.
- Created a header template displaying patient details including name, age, height, weight, and focus.

report_gen/header.html

@@ -0,0 +1,14 @@
+
+  <div class="bg-black text-white px-6 py-4 flex items-center justify-between">
+    <div class="flex items-center">
+      <div class="text-lg font-bold mr-2">ISHP</div>
+      <div class="w-6 h-4 bg-cyan-400 mr-8"></div>
+    </div>
+    <div class="flex space-x-8 text-sm">
+      <span>Name: {{ patient_name }}</span>
+      <span>Age: {{ age }}</span>
+      <span>Height: {{ height }}</span>
+      <span>Weight: {{ weight }}</span>
+      <span>Focus: {{ focus }}</span>
+    </div>
+  </div>