Initial dract of the common structs

common/bid.go

@@ -0,0 +1,13 @@
+package common
+
+import (
+	"math/big"
+)
+
+// Bid is a struct that represents one bid in the PoH
+// WARNING: this is strongly based on the previous implementation, once the new spec is done, this may change a lot.
+type Bid struct {
+	SlotNum      SlotNum  // Slot in which the bid is done
+	InfoOperator Operator // Operaror bidder information
+	Amount       *big.Int
+}