Submit collections metadata to scheduler

[fjetter]

We're already collecting client local context, e.g. with code. This is some extention to this that enriches span information with the API being used. In the future, this could be expanded with other information but for now I just included the type of collection we're submitting

cc @phofl

[github-actions]

Unit Test Results

See test report for an extended history of previous test failures. This is useful for diagnosing flaky tests.

    29 files  ±    0      29 suites  ±0   11h 11m 7s ⏱️ + 1h 14m 50s
 4 052 tests  -     4   3 947 ✅ +    8     97 💤  -   9  8 ❌ +1 
55 813 runs  +7 591  53 643 ✅ +7 359  2 161 💤 +248  9 ❌ +1 

For more details on these failures, see this check.

Results for commit ba2bb6f. ± Comparison against base commit 854a280.

This pull request removes 13 and adds 9 tests. Note that renamed tests count towards both.

distributed.protocol.tests.test_arrow
distributed.protocol.tests.test_collection
distributed.protocol.tests.test_highlevelgraph
distributed.protocol.tests.test_numpy
distributed.protocol.tests.test_pandas
distributed.shuffle.tests.test_graph
distributed.shuffle.tests.test_merge
distributed.shuffle.tests.test_merge_column_and_index
distributed.shuffle.tests.test_metrics
distributed.shuffle.tests.test_rechunk
…

distributed.diagnostics.tests.test_memray ‑ test_basic_integration_scheduler
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_scheduler_report_args[False]
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_scheduler_report_args[report_args0]
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_workers[1]
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_workers[False]
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_workers[True]
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_workers_report_args[False]
distributed.diagnostics.tests.test_memray ‑ test_basic_integration_workers_report_args[report_args0]
distributed.tests.test_spans ‑ test_collections_metadata

♻️ This comment has been updated with latest results.

[phofl]

small comment, otherwise lgtm.

[hendrikmakait]

Thanks, @fjetter! Just one style nit.