feat(boto3): Add S3 extension

[pabloDeputter]

Description

Adds the following request/response attributes: aws.s3.bucket, aws.s3.key, aws.s3.upload_id, aws.s3.copy_source, aws.s3.delete, aws.s3.part_number, http.response.body.size (number of bytes in payload), file.size (represents the total file/object size)

Following tests were removed/moved from old test_s3.py (old boto3 integration only added s3 streaming responses support):

• test_basic() removed - basically only tests botocore xml parsing behavior; generic span behavior is already tested in test_client.py.
• test_streaming() / test_streaming_close() removed - behavior is already tested in test_client.py with mock HTTP server.
• test_span_origin() removed - overlaps with existing tests.
• test_omit_url_data_if_parsing_fails() moved to test_client.py and simplified since it's generic instrumentation.
• test_breadcrumb() and test_url_query_data_collection_breadcrumb() moved and combined to test_client.py, once again since it's generic instrumentation.

Issues

Resolves #7576

[github-actions]

Codecov Results 📊

✅ 55462 passed | ⏭️ 2755 skipped | Total: 58217 | Pass Rate: 95.27% | Execution Time: 152m 43s

📊 Comparison with Base Branch

Metric	Change
Total Tests	📉 -82476
Passed Tests	📉 -77955
Failed Tests	—
Skipped Tests	📉 -4521

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 2061 uncovered lines.
❌ Project coverage is 90.06%. Comparing base (0cc9b31) to head (17469ef).

Coverage diff

@@            Coverage Diff             @@
##        master       #PR       +/-##
==========================================
- Coverage    90.37%    90.06%    -0.31%
==========================================
  Files          202       187       -15
  Lines        26552     20733     -5819
  Branches      9854      7136     -2718
==========================================
+ Hits         23995     18672     -5323
- Misses        2557      2061      -496
- Partials      1495      1214      -281

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[ericapisani]

LGTM, just saw this one small (non-blocking) 🧹