Duplicate Events fix - Add request ID and creation timestamp

[NidhiDixit09]

Reference

SDK-2493 - Add unique id and timestamp to iOS SDK events
https://branch.atlassian.net/browse/SDK-2493

Summary

• Added following parameters in body of all requests generated from SDK
  -- branch_sdk_request_creation_time_stamp - Timestamp when the request object was created.
  -- branch_sdk_request_uuid - unique identifier for request. It includes a UUID + Date in GMT locale. Date part is appended to match the format Gateway uses.
  Format : UUID + YYYYMMDDHH
  Sample:
  "branch_sdk_request_creation_time_stamp" : 1727927969748, "branch_sdk_request_uuid" : "40991413-1CF5-4B23-90B6-698204582872-2024100303",
• When request objects are archived to disk, above two parameters will be archived too.
• Added Unit tests

Motivation

These fields will help in debugging and in uniquely identifying requests generated from SDK.

Type Of Change

• New feature (non-breaking change which adds functionality)

Testing Instructions

• Verify all unit tests pass.

• Send Following Requests using SDK -
  * INSTALL / OPEN ( v1/open , v1/install )
  * STANDARD / CUSTOM EVENTS ( v2/event )
  * GENERATE SHORL URL (v1/url)
  Verify All Requests body contain following params -
  branch_sdk_request_creation_time_stamp
branch_sdk_request_uuid
  Verify branch_sdk_request_uuid is unique for all requests.
  * QR Code( v1/qr-code)
  * Share Sheet (v1/url)

• Verify Caching -
  * Before Sending an event, turn off WIFI (internet).
  * Note down branch_sdk_request_uuid and branch_sdk_request_creation_time_stamp of the request
  * Quit App, tune on WIFI cold-launch it again.
  * App will re-send request which was failed in previous launch. Verify request has same branch_sdk_request_uuid and branch_sdk_request_creation_time_stamp

• Verify branch_sdk_request_uuid and branch_sdk_request_creation_time_stamp are persisted for all request types (Unit Tests - testUUIDANDTimeStampPersistence )

cc @BranchMetrics/saas-sdk-devs for visibility.