feat: add Tjing course import

Search and import courses with layouts from Tjing's GraphQL API.
Total par is calculated from individual hole data. Courses are saved
with a tjing.se link as unique identifier to prevent duplicates.

views/pages/courses.ejs

@@ -19,6 +19,23 @@
             </div>
         </div>
 
+        <div class="card-section">
+            <h3>Import from Tjing</h3>
+            <div class="card-section-form">
+                <input
+                    type="text"
+                    class="input"
+                    id="tjing-search"
+                    placeholder="Search Tjing by name or city..."
+                    style="width: 340px;"
+                />
+                <button class="btn" onclick="searchTjing()" id="tjing-search-btn">
+                    <i class="fas fa-search"></i> Search
+                </button>
+            </div>
+            <div id="tjing-results"></div>
+        </div>
+
         <div id="loading" class="loading" style="display: none;">Loading courses...</div>
         <div id="courses-table" hx-get="/partials/course-table" hx-trigger="load"></div>
 `; %>