Bringing the tree up to formatting parity with clang-format, shellcheck, shfmt, yaml linting, and MD lint (#432)

* Initial restyle

* Updating json and pretty

* Adding editorconfig

* Forcing us to use common pretty-ify versions

* Manually moving this up, fixing more pinning

* restyle devcontainer

* Pulling upstream

* Keeping travis off restyled

* Testing fix for codecov