Added config file for db (#9)

Reviewed-on: phoenix/icarus_auth#9
Co-authored-by: KD <kundeng94@gmail.com>
Co-committed-by: KD <kundeng94@gmail.com>

src/callers/mod.rs

@@ -3,5 +3,6 @@ pub mod register;
 
 pub mod endpoints {
     pub const ROOT: &str = "/";
-    pub const REGISTER: &str = "api/v2/register";
+    pub const REGISTER: &str = "/api/v2/register";
+    pub const DBTEST: &str = "/api/v2/test/db";
 }