libmicroxml: add package

Signed-off-by: Luka Perkov <luka@openwrt.org>
shflags: add package

Signed-off-by: Luka Perkov <luka@openwrt.org>
libfreecwmp: add package

Signed-off-by: Luka Perkov <luka@openwrt.org>
freecwmp: add package

Signed-off-by: Luka Perkov <luka@openwrt.org>