feat: introduce pydantic-settings for config definition and validation (#5202)

Co-authored-by: -LAN- <laipz8200@outlook.com>

api/configs/packaging/__init__.py

@@ -0,0 +1,17 @@
+from pydantic import BaseModel, Field
+
+
+class PackagingInfo(BaseModel):
+    """
+    Packaging build information
+    """
+
+    CURRENT_VERSION: str = Field(
+        description='Dify version',
+        default='0.6.11',
+    )
+
+    COMMIT_SHA: str = Field(
+        description="SHA-1 checksum of the git commit used to build the app",
+        default='',
+    )