Add a CrashHandler to send Logs

[manideepk90]

Implement a CrashHandler for iOS (Swift/Objective-C):

• Capture uncaught crashes and record the details.
• Use LogManager to store crash logs locally.
• On the next app launch, check for any stored logs in memory.
• If logs are found, automatically send them to the logs endpoint.

[Devankguptaa]

@manideepk90 can you please assign this issue to me?