chore: Add HashPointToBytes method (#428)

* mod: rename module to new location (#426)

Signed-off-by: Ignacio Hagopian <jsign.uy@gmail.com>

* Add `MapToScalarFieldBytes` which allows us to map a point to 32 bytes using MapToScalarField

* rename method to `HashPointToBytes`

---------

Signed-off-by: Ignacio Hagopian <jsign.uy@gmail.com>

ipa.go

@@ -60,3 +60,9 @@ func FromBytes(fr *Fr, data []byte) {
 	copy(aligned[32-len(data):], data)
 	fr.SetBytes(aligned[:])
 }
+
+func HashPointToBytes(point *Point) [32]byte {
+	var hashedPoint Fr
+	point.MapToScalarField(&hashedPoint)
+	return hashedPoint.BytesLE()
+}