Add Jalangi2 for Customizable Analysis

[justsomeboy26]

This PR adds the Jalangi2 dynamic analysis framework for customizable testing of JavaScript files.

Changes Made:

• Installed Jalangi2 by cloning the Jalangi2 repo (https://github.com/Samsung/jalangi2) into NodeBB as the Jalangi2 folder.
• Created the 1 Analysis file called myAnalysis.js in Jalangi2 folder that prints out when variables are being used.
• Created 2 testing files called triggerNaN.js and target.js in Jalangi2 folder to test analysis scripts on.

Usage:

• Create your own analysis files following the structure of the sample analysis files with function(sandbox) and ending with (J$).
• Run analysis using node src/js/commands/jalangi.js --inlineIID --inlineSource --analysis (Path to Analysis File) (Target File)

Sample Output of Running 2 Different Analyses (CheckNaN.js and myAnalysis.js) on triggerNaN.js

[coveralls]

Pull Request Test Coverage Report for Build 18769060545

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.002%) to 78.213%

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Totals
Change from base Build 18765016705:	0.002%
Covered Lines:	25046
Relevant Lines:	30113

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💛 - Coveralls

[nihansofia0127]

Looks good! The CI workflow sets up a Node matrix and runs the test suite. YAML also looks valid and this is ready to merge.