Add basic OpenTelemetry tracing for client and server requests #1739

Job	Run time
checks / pre-commit	38s
checks / readme-snippets	13s
checks / test (3.11, lowest-direct, ubuntu-latest)	53s
checks / test (3.10, locked, ubuntu-latest)	56s
checks / test (3.14, locked, ubuntu-latest)	2m 28s
checks / test (3.11, locked, windows-latest)	2m 29s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 1s
checks / test (3.13, locked, ubuntu-latest)	47s
checks / test (3.12, locked, ubuntu-latest)	52s
checks / test (3.13, locked, windows-latest)	2m 26s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 21s
checks / test (3.11, lowest-direct, windows-latest)	2m 33s
checks / test (3.12, locked, windows-latest)	3m 15s
checks / test (3.14, lowest-direct, windows-latest)	2m 54s
checks / test (3.10, locked, windows-latest)	2m 38s
checks / test (3.13, lowest-direct, ubuntu-latest)	55s
checks / test (3.10, lowest-direct, windows-latest)	2m 53s
checks / test (3.10, lowest-direct, ubuntu-latest)	58s
checks / test (3.13, lowest-direct, windows-latest)	2m 51s
checks / test (3.14, locked, windows-latest)	3m 11s
checks / test (3.12, lowest-direct, windows-latest)	3m 46s
checks / test (3.11, locked, ubuntu-latest)	51s
all-green	2s
	40m 51s

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