Add required field to Input struct

[kaduartur]

- What I did
I added the new field required of type boolean to Input struct to validate if the field can be optional

- How to verify it
Add the new field required to a config.json.
Example:

[
    {
        "name": "sample_text_2",
        "type": "text",
        "label": "Type : ",
	"required": true
    }
]

- Description for the changelog
New field to config.json required

[codecov-commenter]

Codecov Report

Merging #551 into master will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #551      +/-   ##
==========================================
+ Coverage   78.60%   78.62%   +0.02%     
==========================================
  Files          98       98              
  Lines        3179     3182       +3     
==========================================
+ Hits         2499     2502       +3     
  Misses        496      496              
  Partials      184      184              

Impacted Files	Coverage Δ
pkg/formula/formula.go	85.71% <ø> (ø)
pkg/formula/runner/inputs.go	98.06% <100.00%> (+0.03%)	⬆️

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[GuillaumeFalourd]

Will it still be necessary to check the value inside the formula @kaduartur ?

What I mean is: if the input is coded as "required":false and the user doesn't inform any value, the local variable with the input name will be set empty, or it won't be set ?

[kaduartur]

Will it still is necessary to check the value inside the formula @kaduartur ?

What I mean is: if the input is coded as "required": false and the user doesn't inform any value, the local variable with the input name will be set empty, or it won't be set?

@GuillaumeFalourd the environment variable that represents the field will be sent empty to formula

[kaduartur]

/merge qa

[ritchie-bot]

👌 Merged branch feature/required_field into qa