feat: move helper functions to a separate file

Former-commit-id: 4f173e40b700e633d8bf6ac85970f5f5f7412ff0

src/helpers.rs

@@ -0,0 +1,9 @@
+use crate::helpers;
+
+pub fn titlecase(s: &str) -> String {
+    let mut c = s.chars();
+    match c.next() {
+        None => String::new(),
+        Some(f) => f.to_uppercase().collect::<String>() + c.as_str(),
+    }
+}

src/main.rs

@@ -9,6 +9,9 @@ use bevy::{
 use std::collections::HashMap;
 use lazy_static::lazy_static;
 
+mod helpers;
+use crate::helpers::*;
+
 const VERSION: &str = env!("CARGO_PKG_VERSION");
 const PKGNAME: &str = env!("CARGO_PKG_NAME");
 
@@ -31,14 +34,6 @@ lazy_static!{
     ].iter().copied().collect();
 }
 
-fn titlecase(s: &str) -> String {
-    let mut c = s.chars();
-    match c.next() {
-        None => String::new(),
-        Some(f) => f.to_uppercase().collect::<String>() + c.as_str(),
-    }
-}
-
 fn main() {
     App::new()
         // Only run the app when there is user input, significantly reducing CPU/GPU usage