feat: modify init command to not use placeholders

[namit-chandwani]

Closes #239

Description

• The init command of Charmil CLI uses the template files and their placeholders that are currently present in the charmil-starter repo to generate a starter project, which makes the charmil-starter repo unusable without the init command (ie. users cannot clone the repo and use it directly due to the presence of template files).

• Our aim is to provide an additional option for users to use Charmil Starter by allowing them to directly clone the charmil-starter Github repository.

• This can be achieved by following these 2 steps:

  • Change the init command implementation to replace default values with the user-specified ones (ie. Github org/user name, repo name and CLI name) by performing simple String replacements instead of using go templates and substituting its placeholders.
    [Handled by this PR]

  • Remove the current contents of the charmil-starter repo (as it contains template files instead of runnable code) and replace it with the contents of the starter present in this repo (charmil/starter).
    [Handled by the PR: chore: replace current repo contents with charmil/starter charmil-starter#7]

Type of change

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

Checklist

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

[namit-chandwani]

This PR is now ready for review :)

CC: @wtrocki

[wtrocki]

ETA 1 day. Weekend

[wtrocki]

good stuff but left some suggestions

[wtrocki]

I do not think all uses of cli name were properly replaced :)

[namit-chandwani]

good stuff but left some suggestions

Sorry, missed the notification somehow.
Will make the required changes tomorrow :)

[namit-chandwani]

Merging this PR now and making a new Charmil release for both charmil/starter module and charmil-starter repo to use.