CLI: `influxdb3 serve` to handle `--num-cores` argument

[hiltontj]

When an Enterprise node is started up, it will accept a --num-cores argument. This determines how many cores the process will use. This defaults to the number of cores available on the system.

When registering the node in the catalog, this will be used as the core_count on the node registration.

The total number of cores across all nodes in the catalog will need to be compared against the number of cores in their license to determine if node registration can proceed, i.e., if there are enough cores available in their license to accommodate the new node.

[Arya-A-Nair]

Would love to work on this issue

[hiltontj]

Sorry @Arya-A-Nair but this issue was opened in error. We have this tracked in an internal repository. Thank you for offering.

[Arya-A-Nair]

@hiltontj any other issue i can contribute to, as i am new to open source

[hiltontj]

Thanks @Arya-A-Nair - keep an eye out for issues with the good-first-issue label. More of such issues may start to pop up as we work through the beta period.