RSDK-4760 include staticlib in release

[abe-winter]

what changed

• add staticlib to cargo.toml
• add .a to gcs upload (previously just .so / .dylib)

why

• in c++, static dependencies simplify the process of deploying to an arbitrary linux distro or version
• currently our c++ sdk links to the rust-utils .so file, which means we have to either provide the .so or bundle it. switching to the .a embeds necessary rust-utils logic in libviamsdk.so, and optimizes away the rest

downstream work

• once this lands and we cut a new release, the c++ sdk will change to consume the .a library