feat: Propagate traceId to the Cocoa SDK

[bitsandfoxes]

With this change the Unity SDK is propagating the trace down to the Cocoa SDK. This allows connecting native errors and crashes with the ones from within the game.

Relies on getsentry/sentry-cocoa#5081

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📖	Do not forget to update Sentry-docs with your feature once the pull request gets approved.

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[bruno-garcia]

is the iOS and Mac bridges the same? I wonder if we could use symlinks

[bitsandfoxes]

Unfortunately, they are not. Functionally, yes, but we load the lib dynamically on macOS:

sentry-unity/package-dev/Plugins/macOS/SentryNativeBridge.m

Lines 97 to 105 in 16e21d8

	/*******************************************************************************/
	/* The remaining code is a copy of iOS/SentryNativeBridge.m with changes to */
	/* make it work with dynamically loaded classes. Mainly: */
	/* - call: [class performSelector:@selector(arg1:arg2:) */
	/* withObject:arg1Value withObject:arg2Value]; */
	/* or xCode warns of class/instance method not found */
	/* - use `id` as variable types */
	/* - use [obj setValue:value forKey:@"prop"] instead of `obj.prop = value` */
	/*******************************************************************************/