Add telemetry collection with opt-in/opt-out

[zarfld]

Related to #113

Add telemetry collection using Sentry for error tracking and performance metrics with an opt-in/opt-out mechanism.

• Telemetry Collection:

  • Add pokeys_py/telemetry.py to implement telemetry collection using Sentry.
  • Add functions to track events, exceptions, and performance metrics.
  • Add opt-in/opt-out mechanism for telemetry in pokeys_py/settings.py.

• Initialization:

  • Modify pokeys_py/__init__.py to import the telemetry module and initialize telemetry collection if the user has opted in.

• Documentation:

  • Update docs/README.md to document the telemetry collection process and privacy compliance.
  • Update CONTRIBUTING.md to include instructions for opting in or out of telemetry.

• Issue Template:

  • Update .github/ISSUE_TEMPLATE/bug_report.md to include instructions for attaching telemetry data when reporting a bug.

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