feat: add Dispatcher Protocol and DirectDispatcher #1875

Job	Run time
checks / readme-snippets	11s
checks / pre-commit	34s
checks / test (3.11, locked, ubuntu-latest)	53s
checks / test (3.11, lowest-direct, windows-latest)	2m 43s
checks / test (3.10, locked, windows-latest)	2m 25s
checks / test (3.10, lowest-direct, ubuntu-latest)	49s
checks / test (3.10, locked, ubuntu-latest)	46s
checks / test (3.11, lowest-direct, ubuntu-latest)	49s
checks / test (3.11, locked, windows-latest)	2m 45s
checks / test (3.12, locked, ubuntu-latest)	55s
checks / test (3.10, lowest-direct, windows-latest)	2m 39s
checks / test (3.13, locked, ubuntu-latest)	44s
checks / test (3.12, lowest-direct, windows-latest)	3m 42s
checks / test (3.12, lowest-direct, ubuntu-latest)	49s
checks / test (3.14, locked, ubuntu-latest)	2m 24s
checks / test (3.14, locked, windows-latest)	4m 29s
checks / test (3.13, lowest-direct, windows-latest)	2m 21s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 17s
checks / test (3.12, locked, windows-latest)	3m 15s
checks / test (3.13, lowest-direct, ubuntu-latest)	44s
checks / test (3.13, locked, windows-latest)	2m 29s
checks / test (3.14, lowest-direct, windows-latest)	2m 31s
all-green	4s
	40m 18s

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