elf2uf2-rs 1.1.0

Port of elf2uf2 to rust
elf2uf2-rs-1.1.0 is not a library.

Port of elf2uf2 to rust

cargo install elf2uf2-rs

Original at https://github.com/raspberrypi/pico-sdk/tree/master/tools/elf2uf2