Convert keyboards artifacts to soong

This CL still keep PRODUCT_COPY_FILE for the original system image
packaging for Make, but create 3 soong's modules which could be used for
soong generated system images.

Bug: 337993945
Test: lunch aosp_cf_x86_64_only_phone-trunk_staging-userdebug ;\
      m aosp_cf_system_x86_64 ; m
Test: lunch yukawa-trunk_staging-userdebug ; m
Change-Id: Ie749de99273f85623861a001e69a9c4187cc8067