fix(Str): Fix cargo warnings

src/string.rs

@@ -1,3 +1,3 @@
-mod MyStr_strict;
+mod my_str_strict;
 
-pub use MyStr_strict::Str;
+pub use my_str_strict::Str;

src/string/my_str_strict.rs

@@ -1,3 +1,4 @@
+#[derive(Debug)]
 enum Status {
     BUISY,
     FREE,
@@ -6,6 +7,7 @@ enum Status {
 
 const SIZE: usize = 15;
 
+#[derive(Debug)]
 pub struct Str {
     _data: Vec<char>,
     _stats: Vec<Status>,
@@ -15,17 +17,19 @@ pub struct Str {
 
 impl Str {
     pub fn new() -> Self {
-        Self {
+        return Self {
             _data: Vec::with_capacity(SIZE),
             _stats: {
                 let mut data = Vec::new();
-                for i in 0..SIZE {
+                let mut i: usize = 0;
+                while i < SIZE {
                     data.push(Status::FREE);
+                    i += 1;
                 }
                 data
             },
             _size: 0,
             _capacity: SIZE,
-        }
+        };
     }
 }