Create missing structural design patterns

[veelenga]

Currently there are adapter, bridge, composite and decorator.

To finish the list of structural patterns the following should be added:

• Facade
• Flyweight
• Proxy

Keep in mind, that implementation is thematic, so somehow it should relate to the popular Mortal Kombat game. You may found some ideas in existed implementations...

Note: before you start, install Crystal programming language.

[silverweed]

I'm willing to contribute to this issue, do you prefer separate pull requests for each patterns or a single one?

[veelenga]

Great 👍 It's up to you!

[silverweed]

Good :)
I think I'll keep them separate to ease reviewing then.

[veelenga]

Nice job, thanks a lot. I have added you to the list of contributors 9de5a04

Are you interested in working on missing behavioural patterns? I am going to create two separate issues for this with hacktoberfest label.

[silverweed]

Why not? I enjoy writing crystal :)

[veelenga]

Great, checkout #9 and #10. You may need to leave a comment so anyone else will not ask about assignment.

I added you to the collaborators, so please create branches directly on this repo, not on the fork.