apollo_fpga: Add optional timeout to `ApolloDebugger._find_device` #240

Job	Run time
firmware-build (cynthion)	43s
firmware-build (samd11_xplained)	35s
firmware-build (qtpy)	42s
firmware-build (cynthion r0.2)	45s
firmware-build (cynthion r0.4)	47s
firmware-build (raspberry_pi_pico)	3m 27s
	6m 59s

Provide feedback