Add riscv64 release binaries #2891
Description
gitui 0.28.0 builds on native riscv64 with no source changes (BananaPi F3, SpacemiT K1, rv64gc).
Native riscv64 GitHub Actions runners are available through the RISE Project (https://riseproject.dev/), free for open source. To enable: install https://github.com/apps/rise-risc-v-runners on this repository.
I can put together a PR if useful.