Implement in-agent method cache for .NET framework applications

[nrcventura]

Describe the story, please be clear on scope of the story.

As part of #1359 we built a prototype of how we can use an in-agent method cache to reduce the lock contention that the current AppDomain caching solution can experience. As part of this story we should do the following.

• Implement the solution from SPIKE: Inject helper functions into .NET Core applications #1359
• Implement a configuration setting or environment variable that can be used to toggle the new caching strategy off and go back to the previous AppDomain caching strategy
• Ensure that the profiler tests are updated for these changes
• Run a performance test to verify that the performance is not worse

Acceptance Criteria

• There is a setting that can be changed to re-enable the AppDomain caching strategy
• By default the in-agent caching strategy will be enabled
• Performance testing verify that the performance did not decrease
• The solution applies to .NET framework applications
• netcoreapp3.1+ applications will continue to use the current .NET core reflection strategy

Dependencies

• Dependencies on UI
• Dependencies on Backend
• Other dependencies ....

Describe Design Consideration/Limitations

Additional context

Estimates

t-shirt size medium

[workato-integration]

https://issues.newrelic.com/browse/NEWRELIC-7445