ognibuild 0.2.14 on Rust Cargo

Highlights

scip: new indexers and per-build-system indexing; stage indexes in the session and copy them out; --apt-build-deps to install Debian Build-Depends (download with network, install offline); scip-ruby indexer for the gem build system
exec: add --apt-build-deps and --copy-out
cache-env: add --update to apt-upgrade a cached image in place
unshare: support network access, a Sources index, and extra packages; preserve sticky bit when extracting tarballs
go: filter indirect dependencies and comment (//) lines from go.mod parsing
debian: emit clean apt-satisfy entries from Build-Depends
python: tolerate distutils being unavailable when reading setup.py metadata
rust: propagate cargo fetch errors instead of panicking
node: map scip-python/scip-typescript commands to their npm packages
Fix RemoteContentsFileSearcher to actually load Contents files
Fix supported_dist_file to match file name suffix