feat: app trial (#26281)

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: hj24 <mambahj24@gmail.com>

api/configs/feature/__init__.py

@@ -965,6 +965,16 @@ class MailConfig(BaseSettings):
         default=None,
     )
 
+    ENABLE_TRIAL_APP: bool = Field(
+        description="Enable trial app",
+        default=False,
+    )
+
+    ENABLE_EXPLORE_BANNER: bool = Field(
+        description="Enable explore banner",
+        default=False,
+    )
+
 
 class RagEtlConfig(BaseSettings):
     """