Add Jacoco option to build, restore method check in populateMap()

[stleary]

Description

• Add Jacoco to build.gradle
• Restore method check to original location in populationMap(), to ensure performance is not impacted.

Refactoring
None

Testing done

• Confirmed Jacoco works as expected
• Ran gradle tests, gradle strict tests, maven tests, and maven strict tests

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[stleary]

What problem does this code solve?
Adds Jacocoo to gradle build, restores location of method check in JSONObject.populateMap()

Does the code still compile with Java6?
Yes

Risks
Low

Changes to the API?
No

Will this require a new release?
No

Should the documentation be updated?
No

Does it break the unit tests?
No

Was any code refactored in this commit?
The JSONObject change was a refactor.

Review status
APPROVED - by myself

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