WorkspaceSymbols troubleshooting

This serves as a test lib for elixir-lsp/elixir-ls#686

• Use the test.code-workspace file to open this as a workspace in VScode
• Open a file in my_dep.ex and watch ElixirLS output
  • ElixirLS output should completely successfully
  • Once done ElixirLS compiling, there should no longer be a beam.smp process
    • Verify with Activity Monitor on MacOS or ps $(pgrep beam.smp) | grep ElixirLS
• open a file in my_fw.ex
  • ElixirLS output will constantly try to compile WorkspaceSymbols
• open another file in my_dep.ex
  • Look at ElixirLS output for my_dep - It will now have the constant compilationgit