Extend Device Context with CPU info

[kahest]

Our device context docs describe a few new CPU related fields which are not provided by the mobile SDKs yet.

• processor_count
• cpu_description
• processor_frequency

Need to write the native parts to get the data (or reproduce from getsentry/sentry-java#2561 and getsentry/sentry-cocoa#2740).

[krystofwoldrich]

Types are already present in JS SDK so RN can use them right away.

• https://github.com/getsentry/sentry-javascript/blob/2aa4e94b036675245290596884959e06dcced044/packages/types/src/context.ts#L49

[krystofwoldrich]

@philipphofmann @brustolin Is there a sentry-cocoa release coming soon so we can unblock this?

• chore(hybrid): Move extra context to standalone class sentry-cocoa#2855

[philipphofmann]

@brustolin, the getsentry/sentry-cocoa#2855 was not released yet. I think CI should be stable enough again after merging getsentry/sentry-cocoa#2889.

[brustolin]

@philipphofmann Yes, I was thinking about the wrong PR, but I guess we can try to make a new release now.

[philipphofmann]

I think we should still wait for getsentry/sentry-cocoa#2879 and getsentry/sentry-cocoa#2891, but then yes, let's release.