Change buffer_0 value: 1 is buy signal; 2 is sell signal; 0 is no signal

Add buffer for
Buffer index 0: buy(1) or sell (-1)
Buffer index 1: entry
Buffer index 2: sl
Buffer index 3: TP1
Buffer index 4: TP2

Fix bug on change TF
Add more method to detect smc model. It should model detected more frequently!
Add alert functions.

Add TP by RR feature.

Add Keep history model setting that keep older model in chart

Fix erorr in case load indicator same symbol in mutiple timeframe

Keep history lastest model
Add comment on top right of screen