Add all volume strategies to backtest. (#235)

# Describe Request

Add all volume strategies to backtest.

# Change Type

New feature.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Enhanced backtesting capabilities with the addition of volume analysis
strategies.
- Introduced the Money Flow Index Strategy, providing more detailed
information on buy and sell points.

- **Bug Fixes**
- Improved the output format of the Money Flow Index Strategy name to
include both sell and buy values.

- **Documentation**
- Updated method signatures and functionality descriptions to reflect
the new and modified strategies.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

cmd/indicator-backtest/main.go

@@ -18,6 +18,7 @@ import (
 	"github.com/cinar/indicator/v2/strategy/momentum"
 	"github.com/cinar/indicator/v2/strategy/trend"
 	"github.com/cinar/indicator/v2/strategy/volatility"
+	"github.com/cinar/indicator/v2/strategy/volume"
 )
 
 func main() {
@@ -70,6 +71,7 @@ func main() {
 	backtester.Strategies = append(backtester.Strategies, strategy.AllStrategies()...)
 	backtester.Strategies = append(backtester.Strategies, trend.AllStrategies()...)
 	backtester.Strategies = append(backtester.Strategies, volatility.AllStrategies()...)
+	backtester.Strategies = append(backtester.Strategies, volume.AllStrategies()...)
 
 	if addSplits {
 		backtester.Strategies = append(backtester.Strategies, strategy.AllSplitStrategies(backtester.Strategies)...)

strategy/volume/money_flow_index_strategy.go

@@ -54,7 +54,7 @@ func NewMoneyFlowIndexStrategyWith(sellAt, buyAt float64) *MoneyFlowIndexStrateg
 
 // Name returns the name of the strategy.
 func (m *MoneyFlowIndexStrategy) Name() string {
-	return fmt.Sprintf("Money Flow Index Strategy (%f)", m.SellAt)
+	return fmt.Sprintf("Money Flow Index Strategy (%f,%f)", m.SellAt, m.BuyAt)
 }
 
 // Compute processes the provided asset snapshots and generates a stream of actionable recommendations.

strategy/volume/volume.go

@@ -24,5 +24,7 @@ import (
 
 // AllStrategies returns a slice containing references to all available volume strategies.
 func AllStrategies() []strategy.Strategy {
-	return []strategy.Strategy{}
+	return []strategy.Strategy{
+		NewMoneyFlowIndexStrategy(),
+	}
 }