Added Properties snippets

```c
#property show_inputs
#property show_confirm
#property library

#property indicator_chart_window
#property indicator_separate_window

#property link                  "XXX"
#property copyright             "XXX"
#property stacksize             1024
#property indicator_buffers     2
#property indicator_maximum     0
#property indicator_minimum     0
#property indicator_colorN      Red
#property indicator_widthN      2
#property indicator_styleN      STYLE_SOLID|STYLE_DASH|STYLE_DOT|STYLE_DASHDOT|STYLE_DASHDOTDOT
#property indicator_levelN      50
#property indicator_levelcolor  Green
#property indicator_levelwidth  1
#property indicator_levelstyle  STYLE_SOLID|STYLE_DASH|STYLE_DOT|STYLE_DASHDOT|STYLE_DASHDOTDOT
```