rpc: add support for `wiring.Component`. [0.5 backport] #3587

Job	Run time
smoke (amaranth-lang/amaranth-boards)	42s
test (3.8)	48s
document	23s
smoke (amaranth-lang/amaranth-stdio)	45s
check-links	22s
test (3.9)	58s
smoke (amaranth-lang/amaranth-soc)	38s
test (3.10)	46s
test (3.11)	41s
test (3.12)	52s
test (pypy-3.8)	57s
test (pypy-3.9)	55s
test (pypy-3.10)	56s
test (3.13-dev)	52s
publish-docs-dev	0s
publish-docs	0s
required	1s
publish-package	0s
publish-schemas	0s
publish-release	0s
	10m 36s

Provide feedback