Make CLI Commands more independent

[JordanShurmer]

Note: this PR is to the cli-refactor branch, not master.

What Changed

• The commands in cli/ are more independent and self-actualizing
  • They export their own usage string
  • They parse their own command line options
• cli.js is cleaned up
  • it only parses the options that it cares about
  • handles printing usage info for every command
  • exports the current version

I Need Help

I'm not sure how to implement the run command. This PR adds it as an unimplemented() piece of code.
We could merge this into the cli-refactor branch then fix the run command in there, or we can update this PR if someone can assist in implementing it.

[JordanShurmer]

Test it out here:

deno run --unstable -A https://raw.githubusercontent.com/JordanShurmer/lume/1872c101bd57a943908a5666daa6339da410cdb1/cli.js --help


deno run --unstable -A https://raw.githubusercontent.com/JordanShurmer/lume/1872c101bd57a943908a5666daa6339da410cdb1/cli.js build --help

# etc.

[oscarotero]

Hi, thanks for your work here.
Both build and run need an instance of site. This is why in my implementation I've created the site before executing these two commands (See here).

Maybe cli.js can export a createSite(options) function that can be imported and used by those two commands (like you did with version).

Then, run only need to execute site.run() with the name of the script. For example: lume run deploy should execute site.run("deploy").

Another thing: can you run deno fmt on finish this pull request? I want to use the same code format of Deno (the only exception is CHANGELOG.md) that should be ignored.

Thanks!

[JordanShurmer]

Thanks. all, for reviewing.

Made various changes to address the feedback:

• Implemented the run command
  • pulled the site building logic into a shared function in cliUtils.js
• Refactored the way cli.js pulls in the commands to avoid doing dynamic import
• Tried to clean up cli.js even more, let me know what you think
• deno fmt

[JordanShurmer]

Test out the latest here: https://raw.githubusercontent.com/JordanShurmer/lume/39514dad3dd2f5f5ce92c8aabbbf7eb53735cd8b/cli.js

deno run --unstable -A https://raw.githubusercontent.com/JordanShurmer/lume/39514dad3dd2f5f5ce92c8aabbbf7eb53735cd8b/cli.js --help

[oscarotero]

Great job. Thank you @JordanShurmer