Enabled clippy warnings and fixed them

cryptography/src/passwords.rs

@@ -12,7 +12,7 @@ bitflags::bitflags! {
         const SPECIAL_CHARACTER = 0b1000;
     }
 
-    #[derive(PartialEq, Eq)]
+    #[derive(PartialEq, Eq, Clone, Copy)]
     pub struct PasswordValidity: u8 {
         const NO_LOWERCASE = 0b00001;
         const NO_UPPERCASE = 0b00010;