Add definitions for missing development tools

[andrew]

A comparison with dependency parsers and package-manager tooling found several development tools without knowledge definitions in brief.

• Babashka: bb.edn.
• OpenTofu: *.tofu.
• Stack: stack.yaml.
• Chef: metadata.rb, metadata.json, and Berksfile.
• BitBake: *.bb and *.bbappend.
• Buck: BUCK and METADATA.bzl.
• Devbox: devbox.json and devbox.lock.
• Jsonnet Bundler: jsonnetfile.json and jsonnetfile.lock.json.
• Puppet: Puppetfile.
• Mint: Mintfile.
• Meteor: package.js, .meteor/versions, and versions.json.
• Helmfile: helmfile.yaml and its variants.
• Argo CD: content-matched YAML manifests.
• Flux: content-matched YAML manifests.

Argo CD and Flux need content-aware matching because they do not have stable filenames. Each new definition should include a focused fixture.