internal/rosa/go: symlink executables

This avoids having to fix up $PATH for every artifact.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/go.go

@@ -64,6 +64,12 @@ cd /work/system/go/src
 chmod -R +w ..
 `+script+`
 ./all.bash
+
+mkdir /work/system/bin
+ln -s \
+	../go/bin/go \
+	../go/bin/gofmt \
+	/work/system/bin
 `, pkg.Path(AbsUsrSrc.Append("go"), false, pkg.NewHTTPGetTar(
 		nil, "https://go.dev/dl/go"+version+".src.tar.gz",
 		mustDecode(checksum),