feat(auth): Endpunkt-Routen für Login konsistenter gemacht

- `~/login` zu `login` und `~/{consumerRoute}/login` zu `{consumerRoute}/login` geändert.

src/DigitalData.Auth.API/Controllers/AuthController.cs

@@ -100,7 +100,7 @@ namespace DigitalData.Auth.API.Controllers
         }
 
         //TODO: Add role depends on group name
-        [HttpPost("~/{consumerRoute}/login")]
+        [HttpPost("{consumerRoute}/login")]
         [AllowAnonymous]
         public async Task<IActionResult> Login([FromForm] LogInDto login, [FromRoute] string consumerRoute)
         {
@@ -115,7 +115,7 @@ namespace DigitalData.Auth.API.Controllers
             }
         }
 
-        [HttpPost("~/login")]
+        [HttpPost("login")]
         [AllowAnonymous]
         public async Task<IActionResult> Login([FromForm] ConsumerApiLogin login)
         {