Make get, post, ... methods optional in endpoint. Check whether these method exist at comptime. When no corresponding method is provided, the handler simply return immediately.

Since it uses comptime, hopefully it should not add any checks at runtime.

Also since App shares a global state (_static), I think it makes more sense NOT accept an app instance in the apis. So:

old:

var app = App.init(...);
try app.register(...);

proposal:

App.init(...);
App.register(...);

See examples/app/.