* a prototype for sentinel middleware
* adapt sentinel's logger to dapr and optimize configs
* fix lint issue
* fix lint issues
* go mod tidy
* revise accoring to the review comments
* go mod tidy
* enhance unit tests
* fix lint issue
* fix go.sum
Co-authored-by: Phil Kedy <phil.kedy@gmail.com>
Co-authored-by: Artur Souza <artursouza.ms@outlook.com>