feat: expose cpu info

[edvujic]

Description

This PR introduces a new feature to expose the CpuInfo private property to show the number of CPU cores available on a system.

JIRA Ticket

WEBEX-379500

Changes

• Exposed the getCpuInfo()
• Added unit tests to verify the correctness of the core count retrieval.

[brycetham]

I noticed that the JSDoc says this method could return "undefined if not available" but here we say it always returns a number. Checking the MDN docs it does seem like all major browsers support it, though I suppose it is possible that someone might use an unsupported browser.

Should we set the return type to number | undefined here?

[edvujic]

Yes, that was my initial idea as well. I checked the MDN docs, but when we return number | undefined TS is giving us an error for:

We could avoid this by using !, but we've already agreed to not use it.

[edvujic]

Another option could be using something like:

static isCapableOfSending1080pVideo(): CapabilityState {
    const numCores = CpuInfo.getNumLogicalCores();
    if (numCores === undefined) {
      return CapabilityState.UNKNOWN;
    }
    if (numCores < 2) {
      return CapabilityState.NOT_CAPABLE;
    }
    return CapabilityState.CAPABLE;
  }

[brycetham]

Looks good, thanks for making the changes. I think once we add more methods to CpuInfo it will become even more obvious the benefits of making it its own class.

One last thing before I approve: could we update the README with an example using the new CpuInfo API (similar to BrowserInfo)?