This ia a playground to better understand some specific bazel features

Directories:

• /app/ a silly TS app that needs its TS files compiled, and those files concattenated
• /compiler/ a silly "compiler" that takes TS files and produced js files

Stuff to explore:

• convert from WORKSPACE to Bazel Modules
  • figure out why compiler/WORKSPACE is needed
  • rename the-compiler back to compiler
• using toolchains
  • polish toolchain usage
• using go workspaces
• using go modules
• using node modules
• bazel test