[WIP]: Replace org.json and Gson with Jackson

[amohammedalfresco]

for Activiti/Activiti#3155

• Initial commit for org.json replacement with jackson library

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Merging #19 into develop will increase coverage by 2.32%.
The diff coverage is n/a.

@@              Coverage Diff              @@
##             develop      #19      +/-   ##
=============================================
+ Coverage      48.01%   50.33%   +2.32%     
+ Complexity       623      278     -345     
=============================================
  Files            620      495     -125     
  Lines          10460     7716    -2744     
  Branches         617      465     -152     
=============================================
- Hits            5022     3884    -1138     
+ Misses          5241     3700    -1541     
+ Partials         197      132      -65

Impacted Files	Coverage Δ	Complexity Δ
...ud/services/modeling/service/api/ModelService.java
...deling/rest/assembler/PagedModelTypeAssembler.java
.../ws/transport/AbstractGraphQLSubProtocolEvent.java
...ing/validation/process/BpmnModelNameValidator.java
.../datafetcher/EngineEventsPublisherDataFetcher.java
...s/BpmnModelServiceTaskImplementationValidator.java
...ql/events/transformer/EngineEventsTransformer.java
...s/modeling/converter/ConnectorActionParameter.java
...services/modeling/validation/DNSNameValidator.java
...criptions/GraphQLSubscriptionSchemaProperties.java
... and 113 more

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[amohammedalfresco]

I'm hitting a wall here due to everit-json-schema heavily using org.json in their module, and to my surprise I've found they too are performing a task to replace org.json with jackson in PR#190.

I believe it would be wise to may be wait for their latest version which already replace org.json to jackson and so in theory we have less worry to fix the problems in our code.

[mteodori]

versions for jackson are not needed, they come from spring boot

[mteodori]

closing as won't fix, the everit library has rejected the PR to move to Jackson