Upgrade cTrader drawing toolbar

Hello,

Current drawing tools are difficult to work with and this section is essential to review. Adding shortcuts (Hotkeys) to some tools such as Arrow, Horizontal Line can create a better experience for users. And adding another tool can speed up the analysis. The list of effective tools needed are:

- Trend Line (Drawing H, L, HH, HL without select several time in toolbar)

- Info Line (Line with attached text)

- Risk / Reward Calculation (Can be used before creating an order)

Thank you.