feat: add OpenTelemetry tracing for client and server requests #596

Job	Run time
checks / pre-commit	36s
checks / readme-snippets	15s
checks / test (3.12, locked, ubuntu-latest)	49s
checks / test (3.11, lowest-direct, ubuntu-latest)	44s
checks / test (3.12, locked, windows-latest)	3m 24s
checks / test (3.11, locked, windows-latest)	2m 43s
checks / test (3.10, lowest-direct, windows-latest)	2m 33s
checks / test (3.13, lowest-direct, ubuntu-latest)	44s
checks / test (3.10, locked, windows-latest)	2m 28s
checks / test (3.11, lowest-direct, windows-latest)	2m 32s
checks / test (3.14, locked, ubuntu-latest)	2m 17s
checks / test (3.12, lowest-direct, ubuntu-latest)	50s
checks / test (3.12, lowest-direct, windows-latest)	3m 13s
checks / test (3.10, locked, ubuntu-latest)	46s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.13, lowest-direct, windows-latest)	2m 47s
checks / test (3.11, locked, ubuntu-latest)	43s
checks / test (3.14, locked, windows-latest)	3m 17s
checks / test (3.10, lowest-direct, ubuntu-latest)	50s
checks / test (3.14, lowest-direct, windows-latest)	2m 22s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 12s
checks / test (3.13, locked, windows-latest)	2m 38s
all-green	5s
	38m 33s

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