chore: code organization

[helio-frota]

• This helps a bit to identify what can be replaced using other dependencies example: file-reader.js can be replaced by a fooBar dependency.
• Helps to identify what is 'command', 'module' and utility code
• Helps a bit when creating a new command example: create a commands/foo.cmd.js and a respective module/foo.mdl.js without worry about the utils files.

[helio-frota]

├── commands
│   ├── console.cmd.js
│   ├── merge.cmd.js
│   ├── report.cmd.js
│   └── save.cmd.js
├── modules
│   ├── console.mdl.js
│   ├── merge.mdl.js
│   ├── report.mdl.js
│   └── save.mdl.js
└── utils
    ├── canonical-name.js
    ├── checker.js
    ├── dual.js
    ├── file-reader.js
    ├── html.js
    ├── messages.js
    ├── project.js
    ├── resources
    ├── unified-list.js
    ├── unknown.js
    ├── url-fetcher.js
    ├── validator.js
    ├── version-handler.js
    └── xml.js

[coveralls]

Coverage decreased (-0.1%) to 89.308% when pulling bfdba2585f4d1e8ebe9b500c6736b39f3174599f on helio-frota:pr into 6670df2cb9d987ad41ee6c51d2fbb613c407d3e0 on bucharest-gold:master.