Feat(Chore, Fix): Refractor, Half Baked Deletion + Admin Privilege

Refractor Codes into sub file/folders
Admin can remove users'/members mfa/2fa, unlink account from  oauth provider
Admin can  add/reset password
Different Email (OIDC + Manual)-Same Account; (Block Linking and authorize if available)

gatehouse_app/models/auth/audit_log.py

@@ -10,7 +10,7 @@ class AuditLog(BaseModel):
     __tablename__ = "audit_logs"
 
     user_id = db.Column(db.String(36), db.ForeignKey("users.id"), nullable=True, index=True)
-    action = db.Column(db.Enum(AuditAction), nullable=False, index=True)
+    action = db.Column(db.String(100), nullable=False, index=True)
 
     # Context
     resource_type = db.Column(db.String(50), nullable=True, index=True)