add auth middleware

http-api/auth.py

@@ -1,3 +1,28 @@
+"""
+Example
+-------
+
+    Resources:
+        HttpApi:
+            Type: AWS::Serverless::HttpApi
+            Properties:
+                Auth:
+                    DefaultAuthorizer: LambdaRequestAuthorizer
+                    Authorizers:
+                        LambdaRequestAuthorizer:
+                            FunctionArn: !GetAtt Authorizer.Arn
+                            AuthorizerPayloadFormatVersion: "2.0"
+                            EnableFunctionDefaultPermissions: true
+                            EnableSimpleResponses: true
+                            Identity:
+                                Headers: [Authorization]
+        Authorizer:
+            Type: AWS::Serverless::Function
+            Properties:
+                Handler: auth.lambda_handler
+
+"""
+
 from dataclasses import dataclass
 
 import boto3