linker: allow multi-step link recipe (`c.combine`) #5700

Job	Run time
run-determination	2s
check-style (./)	46s
check-config (./)	12s
build (rpc/internal/client_example)	27s
check-license-headers (./)	24s
build (internal/arduino/discovery/discovery_client)	17s
check-outdated (./)	11s
check-formatting (./)	8s
build (commands/term_example)	29s
	2m 56s

Provide feedback