feat: add chat

chat/item.go

@@ -0,0 +1,18 @@
+package chat
+
+import "strings"
+
+type item struct {
+	isatme   bool
+	usr, txt string
+}
+
+func (item *item) writeToBuilder(sb *strings.Builder, atprefix, namel, namer string) {
+	if item.isatme {
+		sb.WriteString(atprefix)
+	}
+	sb.WriteString(namel)
+	sb.WriteString(item.usr)
+	sb.WriteString(namer)
+	sb.WriteString(item.txt)
+}