Archived releases contain no source files

v3.0.5.zip has no source files under NFs/amf … directories.
There are no go.mod and build.sh in this archive.

v3.0.4.zip has no source files under src/amf … directories.
There are no build.sh in this archive.

Hi, due to free5GC using git submodule, all nf must using git submodule update --init to fetch the code.