[JENKINS-57098] JSON Parser for Json report

[jmini]

As discussed in #168 (comment) and the next comments, this PR organize JSON parser differently:

1. JsonLogParser (introduced as JsonParser in #168)

The format is a file (not .xml and not .json) where each line is an issue serialized as separated JSON object.

2. JsonParser

Parse a JSON report produced by the "Jenkins Warnings Next Generation Plugin" with the API call: GET [build-url]/[tool-id]/all/api/json

The format is json file (ending with .json) containing a valid JSON Object.
This object as a member issues containing an array of issues. Example:

{
    "issues": [
        {"fileName": "file.txt", "lineStart": 5, "lineEnd": 5, "message": "Message 1"},
        {"fileName": "other.txt", "lineStart": 15, "lineEnd": 18, "message": "Message 2"}
    ]
}

[codecov]

Codecov Report

Merging #177 into master will increase coverage by 0.02%.
The diff coverage is 96.47%.

@@             Coverage Diff              @@
##             master     #177      +/-   ##
============================================
+ Coverage     88.61%   88.64%   +0.02%     
- Complexity     1328     1339      +11     
============================================
  Files           163      165       +2     
  Lines          4216     4235      +19     
  Branches        464      465       +1     
============================================
+ Hits           3736     3754      +18     
  Misses          323      323              
- Partials        157      158       +1

Impacted Files	Coverage Δ	Complexity Δ
...java/edu/hm/hafner/analysis/parser/JsonParser.java	93.75% <92.85%> (-3.31%)	5 <5> (-26)
...a/edu/hm/hafner/analysis/parser/JsonLogParser.java	94.44% <94.44%> (ø)	12 <12> (?)
.../edu/hm/hafner/analysis/parser/JsonBaseParser.java	98.11% <98.11%> (ø)	25 <25> (?)

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[jmini]

@uhafner Thank you for merging this.
Are you creating a PR to update io.jenkins.plugins.analysis.warnings.WarningsPlugin and add some documentation or should I?

[uhafner]

I will add it, thanks for your work!

[jmini]

See commit jenkinsci/warnings-ng-plugin@7063463