exfatprogs: Provide package to work with exfat formats

exfatprogs: Provide package to work with exfat formats

- Create lfs and rootfile
- Add exfatprogs to make.sh
- exfat is supported as a native kernel module since kernel 5.7
- This package requires CONFIG_EXFAT_FS=m to be set for the kernel module for each
   architecture that will be supported. Currently that is only i586

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Reviewed-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>