Add item DataComponent implements (part 3)

level/component/potioncontents.go

@@ -0,0 +1,30 @@
+package component
+
+import (
+	"io"
+
+	pk "github.com/Tnze/go-mc/net/packet"
+)
+
+var _ DataComponent = (*PotionContents)(nil)
+
+type PotionContents struct {
+	PotionID    pk.Option[pk.VarInt, *pk.VarInt]
+	CustomColor pk.Option[pk.Int, *pk.Int]
+	PotionEffects []any
+}
+
+// ID implements DataComponent.
+func (PotionContents) ID() string {
+	return "minecraft:potion_contents"
+}
+
+// ReadFrom implements DataComponent.
+func (p *PotionContents) ReadFrom(r io.Reader) (n int64, err error) {
+	panic("unimplemented")
+}
+
+// WriteTo implements DataComponent.
+func (p *PotionContents) WriteTo(w io.Writer) (n int64, err error) {
+	panic("unimplemented")
+}