Add basic searchbar (#5)

Co-authored-by: Tulir Asokan <tulir@maunium.net>

static/index.js

@@ -0,0 +1,15 @@
+function searchPlugins() {
+    const filter = document.querySelector("#search-input").value.toLowerCase()
+    for (const plugin of document.querySelectorAll(".plugin")) {
+        const name = plugin.querySelector(".title").textContent.toLowerCase()
+        const description = plugin.querySelector(".description").textContent.toLowerCase()
+
+        if (name.includes(filter) || description.includes(filter)) {
+            plugin.style.display = ""
+        } else {
+            plugin.style.display = "none"
+        }
+    }
+}
+
+window.searchPlugins = searchPlugins