refactor cli

[rxbryan]

refactor cli add repl plugin

Description

Please include a summary of the change and which issue is fixed. List any dependencies that are required for this change.

Fixes #(issue_no)

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)
• [ ] This change requires a documentation update
• [ ] Documentation update

Checklist:

• [x] I have performed a self-review of my own code.
• [ ] I have commented my code, particularly in hard-to-understand areas.
• [ ] I have made corresponding changes to the documentation.
• [ ] My changes generate no new warnings.
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[lgtm-com[bot]]

This pull request introduces 3 alerts when merging b73ad488c8470ff72e76a86820cb4d4890bc6d84 into c5d4f3c0ec33a719fea674351290ffc71518b853 - view on LGTM.com

new alerts:

• 1 for Missing variable declaration
• 1 for Unused variable, import, function or class
• 1 for Unknown directive

[viferga]

I have implemented a full refactor including plugins and a different architecture. There is a lot of functionality not implemented yet like command parsing, and we can still take parts from your code to finalize the CLI, that's why I am not going to close this PR yet.

Here's the PR I have done: https://github.com/metacall/core/pull/482

[viferga]

This is finally finished... this is the last commit: https://github.com/metacall/core/commit/d18f13062f948ad14e5f90cdf9f2736b4f929f27

It still requires documentation about how to create new plugins in other languages (js for example).