sharded.hh: add invoke_on variant for a shard range #603

Job	Run time
Test with DPDK enabled / test	16m 59s
Test with C++20 modules enabled / test	11m 43s
Test (clang++, C++20, dev) / test	3m 17s
Test (clang++, C++20, debug) / test	3m 46s
Test (clang++, C++20, release) / test	4m 9s
Test (clang++, C++23, debug) / test	12m 4s
Test (clang++, C++23, dev) / test	9m 45s
Test (clang++, C++23, release) / test	16m 28s
Test (g++, C++20, debug) / test	5m 24s
Test (g++, C++20, dev) / test	2m 59s
Test (g++, C++20, release) / test	4m 20s
Test (g++, C++23, debug) / test	6m 19s
Test (g++, C++23, dev) / test	3m 25s
Test (g++, C++23, release) / test	4m 56s
	1h 45m 34s

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