[FEATURE] STDIN Implementation

[GuillaumeFalourd]

- What I did

• Implementation of STDIN ([FEATURE] STDIN Implementation on Ritchie-CLI #96)

- How I did it

• Create a flag STDIN that would be false or true according to the command line.
• Add a JsonDecoder method (variables will be send as json with ECHO, see examples below)
• Update all core commands with inputs to work with STDIN
• Update runner method to check config.json file from formulas before executing them with STDIN.

- How to verify it

• By executing a STDIN command to execute a formula locally :

echo "{\"name\":\"Dennis Ritchie\",\"coffee_type\":\"espresso\",\"delivery\":\"true\"}" | ./dist/mac/single/rit scaffold generate coffee-go --stdin

OR

echo "{\"treePath\":\"https://commons-repo.ritchiecli.io/tree/tree.json\",\"name\":\"commons-repo\",\"priority\":1}" | ./dist/mac/single/rit add repo --stdin

- Description for the changelog

• STDIN Implementation (core commands + formulas)

[codecov-io]

Codecov Report

Merging #97 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #97   +/-   ##
=======================================
  Coverage   41.94%   41.94%           
=======================================
  Files          58       58           
  Lines        2360     2360           
=======================================
  Hits          990      990           
  Misses       1199     1199           
  Partials      171      171           

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