Use lune folder for scripts

Also improve cli logic for finding wanted script

.lune/hello_lune.luau

@@ -2,7 +2,7 @@ print("Hello, lune! 🌙")
 
 -- Use a function from another module
 
-local module = require("scripts/module")
+local module = require(".lune/module")
 module.hello()
 
 -- Read and print out directories & files in

src/cli.rs

@@ -1,4 +1,7 @@
-use std::{fs::read_to_string, path::PathBuf};
+use std::{
+    fs::read_to_string,
+    path::{PathBuf, MAIN_SEPARATOR},
+};
 
 use clap::Parser;
 use mlua::{Lua, Result};
@@ -21,54 +24,9 @@ impl Cli {
         }
     }
 
-    fn parse_file_path(&self) -> Result<PathBuf> {
-        let parsed_file_path = match &self.path {
-            path if path.ends_with(".luau") || path.ends_with(".lua") => Some(PathBuf::from(path)),
-            path => {
-                let temp_path = PathBuf::from(path);
-                if temp_path.extension().is_none() {
-                    let as_luau_path = temp_path.with_extension("luau");
-                    let as_lua_path = temp_path.with_extension("lua");
-                    if as_luau_path.exists() {
-                        Some(as_luau_path)
-                    } else if as_lua_path.exists() {
-                        Some(as_lua_path)
-                    } else {
-                        let as_luau_in_scripts_folder = PathBuf::from("scripts").join(as_luau_path);
-                        let as_lua_in_scripts_folder = PathBuf::from("scripts").join(as_lua_path);
-                        if as_luau_in_scripts_folder.exists() {
-                            Some(as_luau_in_scripts_folder)
-                        } else if as_lua_in_scripts_folder.exists() {
-                            Some(as_lua_in_scripts_folder)
-                        } else {
-                            None
-                        }
-                    }
-                } else {
-                    None
-                }
-            }
-        };
-        if let Some(file_path) = parsed_file_path {
-            if file_path.exists() {
-                Ok(file_path)
-            } else {
-                Err(mlua::Error::RuntimeError(format!(
-                    "File does not exist at path: '{}'",
-                    self.path
-                )))
-            }
-        } else {
-            Err(mlua::Error::RuntimeError(format!(
-                "Invalid file path: '{}'",
-                self.path
-            )))
-        }
-    }
-
     pub async fn run(self) -> Result<()> {
         // Parse and read the wanted file
-        let file_path = self.parse_file_path()?;
+        let file_path = find_parse_file_path(&self.path)?;
         let file_contents = read_to_string(file_path)?;
         // Create a new lua state and add in all lune globals
         let lua = Lua::new();
@@ -82,3 +40,46 @@ impl Cli {
         Ok(())
     }
 }
+
+fn find_luau_file_path(path: &str) -> Option<PathBuf> {
+    let file_path = PathBuf::from(path);
+    if let Some(ext) = file_path.extension() {
+        match ext {
+            e if e == "lua" || e == "luau" && file_path.exists() => Some(file_path),
+            _ => None,
+        }
+    } else {
+        let file_path_lua = PathBuf::from(path).with_extension("lua");
+        if file_path_lua.exists() {
+            Some(file_path_lua)
+        } else {
+            let file_path_luau = PathBuf::from(path).with_extension("luau");
+            if file_path_luau.exists() {
+                Some(file_path_luau)
+            } else {
+                None
+            }
+        }
+    }
+}
+
+fn find_parse_file_path(path: &str) -> Result<PathBuf> {
+    let parsed_file_path = find_luau_file_path(path)
+        .or_else(|| find_luau_file_path(&format!("lune{MAIN_SEPARATOR}{path}")))
+        .or_else(|| find_luau_file_path(&format!(".lune{MAIN_SEPARATOR}{path}")));
+    if let Some(file_path) = parsed_file_path {
+        if file_path.exists() {
+            Ok(file_path)
+        } else {
+            Err(mlua::Error::RuntimeError(format!(
+                "File does not exist at path: '{}'",
+                path
+            )))
+        }
+    } else {
+        Err(mlua::Error::RuntimeError(format!(
+            "Invalid file path: '{}'",
+            path
+        )))
+    }
+}