Add the support of the XREADGROUP command

[Yangsx-1]

Close #1588

Sorry for the late PR, this command is important for consumer group.

Please refer to xreadgroup and design discussion #1654 .

[sonarqubecloud[bot]]

Quality Gate passed

Issues
27 New issues
0 Accepted issues

Measures
0 Security Hotspots
58.5% Coverage on New Code
2.2% Duplication on New Code

See analysis details on SonarCloud

[matchyc]

Impressive PR!