DEBUG-3328 report DI status in environment logger summary

[p-datadog]

What does this PR do?

Adds the state of dynamic instrumentation to environment logger summary reporting.

Motivation:

For troubleshooting it would be helpful to see whether DI is effectively turned on (i.e. it's requested to be on programmatically or via an environment variable, and environmental conditions are appropriate (environment, Ruby version, etc.))

Change log entry

Yes: library will report whether dynamic instrumentation is enabled in startup summary report

Additional Notes:

How to test the change?

Unit tests are included

[datadog-datadog-prod-us1]

Datadog Report

Branch report: di-status
Commit report: 22b8070
Test service: dd-trace-rb

✅ 0 Failed, 22197 Passed, 1476 Skipped, 5m 13.15s Total Time

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-01-14 19:32:47

Comparing candidate commit 22b8070 in PR branch di-status with baseline commit 5235204 in branch master.

Found 0 performance improvements and 1 performance regressions! Performance is the same for 30 metrics, 2 unstable metrics.

scenario:tracing - Propagation - Trace Context

• 🟥 throughput [-4216.569op/s; -4113.986op/s] or [-11.004%; -10.736%]

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.72%. Comparing base (5235204) to head (22b8070).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4285      +/-   ##
==========================================
- Coverage   97.72%   97.72%   -0.01%     
==========================================
  Files        1354     1354              
  Lines       82410    82455      +45     
  Branches     4213     4216       +3     
==========================================
+ Hits        80538    80577      +39     
- Misses       1872     1878       +6     

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