[Release1] Add middleware.

[rbo13]

We should add useful middleware to our application. Namely:

• Auth
• Gzip
• Logging

We can add some middlewares later. But the middleware mentioned above should be the priority. Anything I've missed from the mentioned middleware above @kenkoii? CC @jkbicbic.

Some optional middleware could be:

• Rate-limiter

[rbo13]

@jkbicbic, you can assist @kenkoii on this task. Since it has 3 sub-tasks 👍

[kenkoii]

For rate-limiter, I believe we need some sort of redis store for us to keep track of requests. Maybe we can add that later.

However, what do you mean about auth @rbo13 ? let's add sessions first

[rbo13]

However, what do you mean about auth @rbo13 ? let's add sessions first

• A middleware that checks if you are login or not, so that we avoid IsLogin on our handlers. What do you think @kenkoii?