Creating a stock market system

[Seniru]

This feature is planned to implement from the beginning of this project. The stock market system should support the following features

• Planning a way to give profit/losses to the shareholders
• Improving the company menu so it displays created companies, owned companies and all companies (related to Improve the current UI and UX #49 )
• Adding support to players to buy shares of other companies
• Giving dividends to the shareholders
• Creating a stock market dashboard showing trends in different companies
  The dashboard would be the most visible and appealing feature for the player. Currently it has planned to show the top 10 or top 20 companies in the dashboard, so the player can choose where to invest. It is planned to use my Linechart library to create the dashboard. The stockmarket dashboard should update once a day (the day is calculated according to the date system that is going to implement with Add support to a date system #47 )