feat!: add context param to error handler func

[pebo]

Fixes #11 with a breaking change

[dimovnike]

this can be done without breaking changes. Add new pair of functions in options:

ErrorHandlerWithCtx: func(ctx context.Context, w http.ResponseWriter, message string, statusCode int)

type Options struct {
	Options           openapi3filter.Options
        ErrorHandlerWithCtx      ErrorHandlerWithCtx // takes priority when set
	MultiErrorHandlerWithCtx MultiErrorHandlerWithCtx // takes priority when set
	ErrorHandler      ErrorHandler
	MultiErrorHandler MultiErrorHandler
	// SilenceServersWarning allows silencing a warning for https://github.com/deepmap/oapi-codegen/issues/882 that reports when an OpenAPI spec has `spec.Servers != nil`
	SilenceServersWarning bool
}