feat: add OpenTelemetry tracing for client and server requests #594

Job	Run time
checks / pre-commit	35s
checks / readme-snippets	10s
checks / test (3.10, locked, windows-latest)	2m 33s
checks / test (3.11, lowest-direct, ubuntu-latest)	49s
checks / test (3.13, lowest-direct, windows-latest)	3m 24s
checks / test (3.10, lowest-direct, ubuntu-latest)	49s
checks / test (3.14, lowest-direct, windows-latest)	2m 21s
checks / test (3.13, locked, ubuntu-latest)	45s
checks / test (3.12, locked, ubuntu-latest)	55s
checks / test (3.10, lowest-direct, windows-latest)	2m 34s
checks / test (3.11, locked, windows-latest)	2m 36s
checks / test (3.11, lowest-direct, windows-latest)	2m 42s
checks / test (3.12, locked, windows-latest)	3m 14s
checks / test (3.12, lowest-direct, ubuntu-latest)	47s
checks / test (3.14, locked, windows-latest)	3m 5s
checks / test (3.10, locked, ubuntu-latest)	47s
checks / test (3.11, locked, ubuntu-latest)	42s
checks / test (3.12, lowest-direct, windows-latest)	3m 39s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 19s
checks / test (3.13, lowest-direct, ubuntu-latest)	44s
checks / test (3.14, locked, ubuntu-latest)	2m 15s
checks / test (3.13, locked, windows-latest)	2m 20s
all-green	3s
	39m 8s

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