Add templ package to handle rendering of templates

templates/edit.tmpl.html

@@ -0,0 +1,29 @@
+{{define "title"}}Edit {{.note.Title}}{{end}}
+
+{{define "main"}}
+<form action="{{.urlEdit}}" method="POST">
+    <div class="mb-3">
+        <label for="noteBodyInput" class="form-label">Note</label>
+        <div class="border rounded rounded-1">
+            <div id="toolbar"></div>
+            <textarea class="form-control" id="noteBodyInput" name="body" aria-described-by="bodyHelp">{{.noteBody}}</textarea>
+        </div>
+        <div id="bodyHelp" class="form-text">Enter your note content in markdown</div>
+    </div>
+    <button class="btn btn-primary" type="submit">Save</button>
+</form>
+
+<script src="https://unpkg.com/tiny-markdown-editor/dist/tiny-mde.min.js"></script>
+<link
+  rel="stylesheet"
+  type="text/css"
+  href="https://unpkg.com/tiny-markdown-editor/dist/tiny-mde.min.css"
+/>
+<script type="text/javascript">
+var tinyMDE = new TinyMDE.Editor({ textarea: "noteBodyInput" });
+var commandBar = new TinyMDE.CommandBar({
+    element: "toolbar",
+    editor: tinyMDE,
+});
+</script>
+{{end}}