rpc: add support for `wiring.Component`. #3594

Job	Run time
check-links	51s
smoke (amaranth-lang/amaranth-boards)	1m 4s
document	42s
test (3.8)	2m 50s
smoke (amaranth-lang/amaranth-stdio)	51s
test (3.9)	2m 48s
smoke (amaranth-lang/amaranth-soc)	50s
test (3.10)	2m 32s
test (3.11)	3m 1s
test (3.12)	3m 34s
test (pypy-3.8)	5m 24s
test (pypy-3.9)	4m 57s
test (pypy-3.10)	5m 10s
test (3.13-dev)	3m 6s
publish-docs	32s
publish-docs-dev	0s
required	1s
publish-schemas	4s
publish-package	48s
publish-release	2s
	39m 7s

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