Add item DataComponent implements (part 2)

level/component/tool.go

@@ -0,0 +1,22 @@
+package component
+
+import "io"
+
+var _ DataComponent = (*Tool)(nil)
+
+type Tool struct{}
+
+// ID implements DataComponent.
+func (Tool) ID() string {
+	return "minecraft:tool"
+}
+
+// ReadFrom implements DataComponent.
+func (t *Tool) ReadFrom(r io.Reader) (n int64, err error) {
+	panic("unimplemented")
+}
+
+// WriteTo implements DataComponent.
+func (t *Tool) WriteTo(w io.Writer) (n int64, err error) {
+	panic("unimplemented")
+}