[DEM] EMA Crossover Signal (With Backtesting)

[DEM] EMA Crossover Signal (With Backtesting) is designed to generate buy and sell signals based on the classic exponential moving average crossover strategy using two configurable EMA periods (default 9 and 21). It also includes a comprehensive backtesting framework to evaluate the historical performance of these signals. The indicator overlays directly on the price chart, plotting signals and displaying performance statistics in a table. The strategy generates buy signals when the shorter EMA crosses above the longer EMA (indicating upward momentum shift) and sell signals when the shorter EMA crosses below the longer EMA (indicating downward momentum shift), while the integrated backtesting system tracks signal accuracy, average returns, signal frequency per month, and total correct predictions for both buy and sell signals over a configurable holding period to help traders evaluate the effectiveness of the crossover parameters.