lv-lib-png: Add recipe for LVGL for handling PNG format

Note that this lib will be part of next lvgl release,
meanwhile we build it without touching lvgl default config.

Relate-to: https://git.ostc-eu.org/OSTC/planning/core-os/-/issues/233
Relate-to: https://github.com/lvgl/lvgl/issues/2534
Forwarded: https://github.com/openembedded/meta-openembedded/pull/454
Change-Id: I2e467caae8e70577e5c9a93f92efc6588cf3bfa2
Origin: https://github.com/openembedded/meta-openembedded/pull/454/commits/e8b0d89df2219c7d0cff6f4dfcbe4dd29033652e


Signed-off-by: Philippe Coval <philippe.coval@huawei.com>