feat: add command in charmil cli

[ankithans]

Closes #166

Description

• Add command in charmil CLI
• Refactor charmil CLI

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] Documentation change
• [ ] Other (please specify)

Checklist

• [x] Documentation added for the feature
• [x] CI and all relevant tests are passing
• [ ] Code Review completed
• [ ] Verified independently by reviewer

[wtrocki]

Very nice!

[namit-chandwani]

The add command fails when any of the parent directories in --cmdPath flag doesn't exist.

Logs:

>> ./charmil add --cmdName="mycmd" --cmdPath="./cmd"

Usage:
  charmil add [flags]

Examples:
$ charmil add cliname

Flags:
  -s, --cmdName string   name of the new command
  -c, --cmdPath string   command path where you want to create the command (default ".")
  -h, --help             help for add

mkdir cmd/mycmd: no such file or directory

---

I had a similar issue with the crud command. Mentioning the PR which fixed it (for reference): https://github.com/aerogear/charmil/pull/192

Just replacing os.Mkdir with os.MkdirAll (while creating the dir) should be able to fix this mostly.

[ankithans]

should we merge this @wtrocki ?

[wtrocki]

Ok.. Rush doesn't help. Release needed.