Make the loader "Lucky Aware"

[jwoertink]

Right now if you want to load a different env file based on what Lucky::Env.name is, then you have to use a ternary or something:

require "lucky_env"

env_file = Lucky::Env.test? ? ".env.test" : ".env"
LuckyEnv.load(env_file)

This is fine, but it would be better if you didn't have to consider that. Sort of playing off #1, we could even move this code in. Then maybe your spec_helper.cr does something like:

# spec/spec_helper.cr
ENV["LUCK_ENV"] = "test"
require "spec"

# ...

Then in your app, you'd have:

# src/shards.cr
require "lucky_env"
LuckyEnv.load!

This method would know that if ENV["LUCKY_ENV"] was set to "test", then we should auto-load .env.test. The Rails env has something similar