refac: APIHelper에 DummySession 적용, NO_LOGIN 구분

src/sammo/API/Login/LoginByID.php

@@ -32,7 +32,7 @@ class LoginByID extends \sammo\BaseAPI
 
     public function getRequiredSessionMode(): int
     {
-        return BaseAPI::NO_SESSION;
+        return BaseAPI::NO_LOGIN;
     }
 
     public function scrubToken(int $userID)

src/sammo/API/Login/LoginByToken.php

@@ -17,7 +17,7 @@ class LoginByToken extends LoginByID
 
     public function getRequiredSessionMode(): int
     {
-        return \sammo\BaseAPI::NO_SESSION; //XXX: Token 때문에 엄밀히는 NO_SESSION이 아님
+        return \sammo\BaseAPI::NO_LOGIN;
     }
 
     public function validateArgs(): ?string

src/sammo/API/Login/ReqNonce.php

@@ -15,7 +15,7 @@ use sammo\Validator;
 class ReqNonce extends BaseAPI{
 
     public function getRequiredSessionMode(): int {
-        return \sammo\BaseAPI::NO_SESSION;
+        return \sammo\BaseAPI::NO_LOGIN;
     }
 
     public function validateArgs(): ?string