Add specific instructions on `mavlink2rest` and `mavlink-camera-manag… #1276

Job	Run time
Test	48s
deploy-blueos-extension	49s
deploy-electron (macos-latest, macos, dmg)	3m 51s
deploy-flatpak	6m 10s
deploy-electron (ubuntu-latest, linux, AppImage)	2m 14s
deploy-page	32s
	14m 24s

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