Update project structure and build process

libwallet/newop/fee_state.go

@@ -0,0 +1,26 @@
+package newop
+
+const (
+	FeeStateFinalFee      string = "FinalFee"
+	FeeStateNeedsChange   string = "NeedsChange"
+	FeeStateNoPossibleFee string = "NoPossibleFee"
+)
+
+type FeeState struct {
+	State              string
+	Amount             *BitcoinAmount
+	RateInSatsPerVByte float64
+	TargetBlocks       int64 // 0 if target not found
+}
+
+func (f *FeeState) IsFinal() bool {
+	return f.State == FeeStateFinalFee
+}
+
+func (f *FeeState) NeedsChange() bool {
+	return f.State == FeeStateNeedsChange
+}
+
+func (f *FeeState) IsNoPossibleFee() bool {
+	return f.State == FeeStateNoPossibleFee
+}