CustomParamDecoder a helper for openapi3filter for decoding text parameters.

ValidateOpenapi3 returns a ValidateOpenapi3 middleware.

ValidateOpenapi3WithConfig returns a ValidateOpenapi3 middleware with config.

ValidateRequest - validate that a HTTP request matches the OpenAPI3 schema.

ValidateResponse - validate the response matches the schema before sending it out.

DefaultValidateOpenapi3Config is the default ValidateOpenapi3Config middleware config.