feat: Jira Validator Option

[iammuho]

Issue: #482
Note: For this option to be working, options should be running on async. Before this PR to be accepted, please look at this PR: #481 (MERGED)

This PR adds a Jira option to the below validators. If anyone wants to check JIRA TICKET to be validated through JIRA APIs;

1. Enable JIRA Settings via env variables;

JIRA_PASSWORD //API TOKEN
JIRA_USERNAME //USERNAME
JIRA_HOST //HOST
JIRA_PROTOCOL // default 'https'
JIRA_VERSION // default '2'
JIRA_STRICT_SSL // default 'true'

2. Enable JIRA VALIDATION option in validators;

---
version: 2
mergeable:
  - when: pull_request.*, pull_request_review.*
    name: 'checkfirst'
    validate:
      - do: title
        jira:
          regex: '[A-Z][A-Z0-9]+-\d+'
          regex_flag: none
          message: 'JIRA Ticket ID is not valid'

You can use JIRA VALIDATION option in below validators;

• title
• headRef
• description
• label
• commit
• milestone

[codecov]

Codecov Report

Merging #483 (c40584f) into master (b6e7962) will increase coverage by 0.16%.
The diff coverage is 85.00%.

@@            Coverage Diff             @@
##           master     #483      +/-   ##
==========================================
+ Coverage   92.22%   92.38%   +0.16%     
==========================================
  Files          75       76       +1     
  Lines        1775     1997     +222     
  Branches      346      410      +64     
==========================================
+ Hits         1637     1845     +208     
- Misses        117      133      +16     
+ Partials       21       19       -2     

Impacted Files	Coverage Δ
lib/validators/commit.js	100.00% <ø> (ø)
lib/validators/description.js	100.00% <ø> (ø)
lib/validators/headRef.js	100.00% <ø> (ø)
lib/validators/label.js	100.00% <ø> (ø)
lib/validators/milestone.js	100.00% <ø> (ø)
lib/validators/title.js	100.00% <ø> (ø)
lib/validators/validator.js	92.00% <ø> (-1.03%)	⬇️
lib/validators/options_processor/options/jira.js	85.00% <85.00%> (ø)
lib/interceptors/interceptor.js	33.33% <0.00%> (-16.67%)	⬇️
lib/actions/assign.js	86.95% <0.00%> (-7.79%)	⬇️
... and 61 more

---

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[iammuho]

hey @jusx any comments for this ?

[jusx]

Overall looks good. Left a comment about the enabled suboption.

[iammuho]

hey @jusx , you can check again. You are right, no need for enabled.

[jusx]

@iammuho Added additional comments. I would recommend including some docs either in this PR or create an issue regarding docs so that it is in the backlog.

[iammuho]

@jusx , removed all references and sent the docs. I think in the docs we should also enable options menu to explain options one by one like validators and actions, because i.e JIRA option does work only self-hosted (to set environment values) For now, I've added how to add JIRA option to required validators, on another PR I'll add options part to the docs.