Game request UI

[minhhang107]

Is your feature request related to a problem? Please describe.
We need a way to let users send game request. The logic is as follows:

• User clicks on Game button to access the game
• If users haven't played the game, there will be a pop with game rules
• On the popup, user can choose to send the game request to partner or cancel, system will display a confirmation message (whether the request was sent successfully or not)
• If users have played the game already, the system displays game results (see Build Game results #61 )

Are there any related issues? Please list all of them.
#49
#61
backend

Describe the solution you'd like

Acceptance criteria

• User can see game rule when hitting Game button on Chat page
• User can send game request to the current partner they're chatting with
• User can choose to cancel
• User can see success message on successful request
• User can see error message on unsuccessful request

Describe alternatives you've considered
N/A

Additional context
Mock up design: https://www.figma.com/file/D6OdyoGg8cbL1hAScPEsYI/PRJ-Diagrams?node-id=404%3A825