Housekeeping

This defines what each repo and crate must have as a part of their files.

1. Apache-2.0 license
   • license plates in each file as SPDX ids
   • license file
   • Cargo.toml license
2. MSRV
   • Cargo.toml edition & rust-version
   • rust-toolchain.toml
   • MSRV CI
3. Info
   • README.md
   • CONTRIBUTING.md
   • CHANGELOG.md
   • CODE_OF_CONDUCT.md
4. Crate info
   • correct homepage & repo URL
   • correct keywords
   • correct categories
   • correct author(s) email
   • correct description
5. Formatting
   • .rustfmt.toml
6. CI
   • Badges in README
   • Makefile.toml
   • CI scripts based on makefile
   • correct features for CI
   • contrib/depCargo.toml and as-dependency build
7. Sponsors: in .githum/FUNDING.yml
   • author(s)
   • organization(s)
8. Docs:

   • add

     [package.metadata.docs.rs]
     all-features = true
     rustc-args = ["--cfg", "docsrs"]
     

   • add feature gates with docsrs

9. Security
   • Enable Security reporting
   • Add SECURITY.md
10. Test coverage
    • Ensure CI is running and reported
    • Edit codecov.yml and set proper test coverage targets