po4a: add recipe
po4a: add recipe

The po4a (PO for anything) project goal is to ease translations (and
more interestingly, the maintenance of translations) using gettext
tools on areas where they were not expected like documentation.

Signed-off-by: Ming Liu <11a3c78e98e9b0d6c61303d566e3efca80e669cf@external.atlascopco.com>
Signed-off-by: Martin Jansa <516df3ff67e1fa5d153800b15fb204c0a1a389dc@gmail.com>

VCTLabs/meta-openembedded,VCTLabs/meta-openembedded,rehsack/meta-openembedded,mrchapp/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,schnitzeltony/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,rehsack/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,sigma-embedded/elito-org.openembedded.meta,lgirdk/meta-openembedded,kraj/meta-openembedded,mrchapp/meta-openembedded,schnitzeltony/meta-openembedded,victronenergy/meta-openembedded,rehsack/meta-openembedded,VCTLabs/meta-openembedded,moto-timo/meta-openembedded,kraj/meta-openembedded,amery/meta-openembedded,kraj/meta-openembedded,VCTLabs/meta-openembedded,openembedded/meta-openembedded,mrchapp/meta-openembedded,victronenergy/meta-openembedded,mrchapp/meta-openembedded,victronenergy/meta-openembedded,schnitzeltony/meta-openembedded,kraj/meta-openembedded,victronenergy/meta-openembedded,kraj/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,lgirdk/meta-openembedded,lgirdk/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,openembedded/meta-openembedded,lgirdk/meta-openembedded,VCTLabs/meta-openembedded,lgirdk/meta-openembedded,amery/meta-openembedded,rehsack/meta-openembedded,rehsack/meta-openembedded,schnitzeltony/meta-openembedded,amery/meta-openembedded,amery/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,amery/meta-openembedded,openembedded/meta-openembedded,VCTLabs/meta-openembedded,openembedded/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,rehsack/meta-openembedded,mrchapp/meta-openembedded,VCTLabs/meta-openembedded,moto-timo/meta-openembedded,moto-timo/meta-openembedded,sigma-embedded/elito-org.openembedded.meta,amery/meta-openembedded,victronenergy/meta-openembedded,openembedded/meta-openembedded,schnitzeltony/meta-openembedded,moto-timo/meta-openembedded,moto-timo/meta-openembedded,schnitzeltony/meta-openembedded,lgirdk/meta-openembedded,mrchapp/meta-openembedded,rehsack/meta-openembedded,kraj/meta-openembedded,amery/meta-openembedded,mrchapp/meta-openembedded,kraj/meta-openembedded,schnitzeltony/meta-openembedded,lgirdk/meta-openembedded,amery/meta-openembedded