Port skybot hash plugin as a module

src/bot/modules/mod.rs

@@ -1,5 +1,6 @@
 pub mod builtins;
 pub mod dice;
+pub mod hash;
 pub mod weather;
 
 use super::module::Module;
@@ -8,6 +9,7 @@ pub fn all(network: &str) -> Vec<Box<dyn Module>> {
     vec![
         Box::new(builtins::Builtins),
         Box::new(dice::Dice::new()),
+        Box::new(hash::Hash),
         Box::new(weather::Weather::new(network)),
     ]
 }