New header stuff do hyun#3

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Dksehgus7 wants to merge 6 commits intomasterfrom

new_header_stuff_DoHyun

Commits on Jul 18, 2023

added blink state and software timer
SofiyaSp
committed

Commits on Jul 22, 2023

need to fix
SofiyaSp
committed
fixed
RobinHYuan
committed

Commits on Sep 9, 2023

set up rosserial
SofiyaSp
committed

Commits on Sep 22, 2023

added rosnode header file
SofiyaSp
committed

Commits on Oct 17, 2023

testing
Dksehgus7
committed