feat: replace text/template with templ and refactor code

data/annotation.go

@@ -0,0 +1,15 @@
+package data
+
+type AnnotationsResponse struct {
+	Response struct {
+		Referent struct {
+			Annotations []Annotation `json:"annotations"`
+		} `json:"referent"`
+	} `json:"response"`
+}
+
+type Annotation struct {
+	Body struct {
+		Html string `json:"html"`
+	} `json:"body"`
+}