feat(io-ts-http): Add 409 (conflict) response code

Author: jonball4

packages/io-ts-http/src/statusCode.ts

@@ -6,6 +6,7 @@ export const HttpToKeyStatus = {
   401: 'unauthenticated',
   403: 'permissionDenied',
   404: 'notFound',
+  409: 'conflict',
   429: 'rateLimitExceeded',
   500: 'internalError',
   503: 'serviceUnavailable',
@@ -19,6 +20,7 @@ export const KeyToHttpStatus = {
   unauthenticated: 401,
   permissionDenied: 403,
   notFound: 404,
+  conflict: 409,
   rateLimitExceeded: 429,
   internalError: 500,
   serviceUnavailable: 503,