refactor: improve Argcfile.sh

[sigoden]

USAGE: Argcfile <COMMAND>

COMMANDS:
  run@tool                    Run the tool [aliases: tool:run]
  run@bot                     Run the bot [aliases: bot:run]
  build                       Build the project
  build@tool                  Build tools [aliases: tool:build]
  build-bin@tool              Build tools to bin [aliases: tool:build-bin]
  build-declarations@tool     Build tools function declarations file [aliases: tool:build-declarations]
  generate-declarations@tool  Generate function declaration for the tool [aliases: tool:generate-declarations]
  build@bot                   Build bots [aliases: bot:build]
  build-bin@bot               Build bots to bin [aliases: bot:build-bin]
  build-declarations@bot      Build bots function declarations file [aliases: bot:build-declarations]
  generate-declarations@bot   Generate function declarations for the bot [aliases: bot:generate-declarations]
  list@tool                   List tools which can be put into functions.txt [aliases: tool:list]
  list@bot                    List bots which can be put into bots.txt [aliases: bot:list]
  test                        Test the project
  test@tool                   Test tools [aliases: tool:test]
  test-execute-code-tools     Test maybe_execute_* tools [aliases: tool:test-execute-code]
  test-demo-tools             Test demo tools [aliases: tool:test-demo]
  test@bot                    Test bots [aliases: bot:test]
  test-todo-bots              Test todo-* bots [aliases: bot:test-todo]
  clean@tool                  Clean tools [aliases: tool:clean]
  clean@bot                   Clean bots [aliases: bot:clean]
  install                     Install this repo to aichat functions_dir
  create                      Create a boilplate tool script
  version                     Show pre-requisite tool versions