feat: Auto Instrumentation for Awake

[bitsandfoxes]

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The idea is to start and finish spans automatically for every Awake method in all MonoBehaviour within the project. Noticeable pitfall: Not every MonoBehaviour implements Awake.

The plan:

• [x] Hook up to the compilation pipeline to get the Assembly-CSharp.dll
• [x] Add options flag to enable/disable feature and put it on the window
• [x] Insert Start Span as the very first instruction
• [x] Insert Finish Span before every return
• [x] Enable Trace Sample Rate for smoke testing
• [x] Enable Performance Auto Instrumentation for smoke testing
• [x] Smoke test looking for a app.start transaction
• [x] Smoke test looking for awake span

[github-actions[bot]]

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

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[mattjohnsonpint]

Generally looks good. Commented with some minor nits.

Didn't test it out though - I'd need more context.