chore(di): add process_tags

[dubloom]

This PR implements this RFC for dynamic instrumentation.

Add process_tags to dynamic instrumentation payload

Testing

• Check that process tags are not included if deactivated
• Check the right process tags are set in the payload when activated

[github-actions]

CODEOWNERS have been resolved as:

ddtrace/debugging/_encoding.py                                          @DataDog/debugger-python
tests/debugging/test_encoding.py                                        @DataDog/debugger-python

[github-actions]

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 240 ± 3 ms.

The average import time from base is: 240 ± 3 ms.

The import time difference between this PR and base is: 0.6 ± 0.1 ms.

Import time breakdown

The following import paths have grown:

ddtrace.auto 0.060 ms (0.02%)

ddtrace.bootstrap.sitecustomize 0.060 ms (0.02%)

ddtrace.bootstrap.preload 0.060 ms (0.02%)

ddtrace.internal.symbol_db.remoteconfig 0.060 ms (0.02%)

ddtrace.internal.symbol_db.symbols 0.060 ms (0.02%)

The following import paths have shrunk:

ddtrace.auto 1.753 ms (0.73%)

ddtrace.bootstrap.sitecustomize 1.079 ms (0.45%)

ddtrace.bootstrap.preload 1.079 ms (0.45%)

ddtrace.internal.remoteconfig.client 0.565 ms (0.23%)

ddtrace 0.674 ms (0.28%)

ddtrace.internal._unpatched 0.028 ms (0.01%)

json 0.028 ms (0.01%)

json.decoder 0.028 ms (0.01%)

re 0.028 ms (0.01%)

enum 0.028 ms (0.01%)

types 0.028 ms (0.01%)

[P403n1x87]

I think here it's enough to test that the field is set. Testing for the actual values should be done in a unit test for the process tags feature itself to avoid redundancy.

[dubloom]

addressed in 0972b8d