Fix: Use standard library for UUID generation

[saikumarrs]

Description of the change

Replaced the custom UUID generation logic in the SDK with @lukeed/uuid to ensure fewer collisions in the IDs. This will be used by messageId and anonymousId.
Moreover, the messageId format has been updated to match other client SDKs.

New message ID format: <timestamp>-<uuid>.
Note: The timestamp is in microseconds (with at least 100 microseconds resolution).

Type of change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Related issues

N/A

Checklists

Development

• Lint rules pass locally
• The code changed/added as part of this pull request has been covered with tests
• All tests related to the changed code pass in development

Code review

• This pull request has a descriptive title and information useful to a reviewer. There may be a screenshot or screencast attached
• "Ready for review" label attached to the PR and reviewers mentioned in a comment
• Changes have been reviewed by at least one other engineer
• Issue from task tracker has a link to this pull request

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