Add tokens routes

moneymgr_backend/src/constants.rs

@@ -1,3 +1,8 @@
+//! # Project constants
+
+/// Length of generated tokens
+pub const TOKENS_LEN: usize = 50;
+
 /// Header used to authenticate API requests made using a token
 pub const API_TOKEN_HEADER: &str = "X-Auth-Token";