Add package names and paths to the zig root module cache hash.
Add package names and paths to the zig root module cache hash.

Add package names to the stage1 cache hash and package files to the
stage1 manifest file.

raulgrell/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,zig-lang/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,raulgrell/zig,raulgrell/zig