DEBUG-2334 remaining dynamic instrumentation code

[p-datadog]

What does this PR do?

• Adds DI Remote and integrates DI into remote config processing
• Integration test starting from remote config parsing, through instrumentation to snapshot sending to backend
• DI is now enabled by default
• DI code tracking is now enabled by default (script_compiled trace point) if DD_DYNAMIC_INSTRUMENTATION_ENABLED is set in environment

Motivation:

Initial DI implementation in Ruby

Change log entry
Dynamic instrumentation is now available in Ruby as a Preview. Currently only log probes are implemented, they can be set on both methods and lines. If you are interested in trying out Dynamic Instrumentation in Ruby, please contact Datadog to be added to the Preview program.

Additional Notes:

Replaces #4063

How to test the change?
Additional unit and integration tests are included + system tests in DataDog/system-tests#3516

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-11-25 14:40:34

Comparing candidate commit 5fe2b77 in PR branch di-rest-2 with baseline commit 0d88e2a in branch master.

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

scenario:profiler - sample timeline=false

• 🟥 throughput [-0.514op/s; -0.501op/s] or [-7.833%; -7.626%]

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 95.32710% with 20 lines in your changes missing coverage. Please review.

Project coverage is 97.78%. Comparing base (0d88e2a) to head (5fe2b77).
Report is 4 commits behind head on master.

Files with missing lines	Patch %	Lines
lib/datadog/di.rb	57.14%	9 Missing ⚠️
spec/datadog/di/remote_spec.rb	96.99%	4 Missing ⚠️
lib/datadog/di/code_tracker.rb	0.00%	2 Missing ⚠️
lib/datadog/di/remote.rb	95.74%	2 Missing ⚠️
.../integration/everything_from_remote_config_spec.rb	98.38%	2 Missing ⚠️
lib/datadog/core/configuration/components.rb	83.33%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #4098    +/-   ##
========================================
  Coverage   97.78%   97.78%            
========================================
  Files        1350     1353     +3     
  Lines       81399    81786   +387     
  Branches     4109     4141    +32     
========================================
+ Hits        79593    79974   +381     
- Misses       1806     1812     +6     

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