Share custom game with friends

[yassinedoghri]

Why? Description.

• Players might want to share their game params to challenge their friends.
• The game should take advantage of social media.

How? Solution.

• When a player changes his game params, the url should be updated accordingly.
• The game should display a button "Share custom game!" in the home and result pages. (via URL or social media)
• The game should write a predefined message so that the player doesn't have to (eg. Can you beat the game I made?)
• It should also display the custom game params in the og:description tag for the friends to see.
• The game should not be customizable when using a custom game link

Additional context
Jarvig should include Open Graph meta tags to be displayed properly on social media.