easymesh: cmduchecker: validate vendor specific cmdu

src/extensions/map/cmduchecker.c

src/extensions/map/r1.c

src/extensions/map/r2.c

src/extensions/map/r3.c

src/extensions/map/r4.c

src/extensions/map/r6.c

src/extensions/map/tlv_checker.c

src/extensions/map/tlv_checker.h