feat: Introducing StreamingCredentialsProvider for token based authentication (#3320)

* wip

* update documentation

* add streamingcredentialsprovider in options

* fix: put back option in pool creation

* add package level comment

* Initial re authentication implementation

Introduces the StreamingCredentialsProvider as the CredentialsProvider
with the highest priority.

TODO: needs to be tested

* Change function type name

Change CancelProviderFunc to UnsubscribeFunc

* add tests

* fix race in tests

* fix example tests

* wip, hooks refactor

* fix build

* update README.md

* update wordlist

* update README.md

* refactor(auth): early returns in cred listener

* fix(doctest): simulate some delay

* feat(conn): add close hook on conn

* fix(tests): simulate start/stop in mock credentials provider

* fix(auth): don't double close the conn

* docs(README): mark streaming credentials provider as experimental

* fix(auth): streamline auth err proccess

* fix(auth): check err on close conn

* chore(entraid): use the repo under redis org

osscluster_test.go

@@ -89,6 +89,9 @@ func (s *clusterScenario) newClusterClient(
 func (s *clusterScenario) Close() error {
 	ctx := context.TODO()
 	for _, master := range s.masters() {
+		if master == nil {
+			continue
+		}
 		err := master.FlushAll(ctx).Err()
 		if err != nil {
 			return err