feat(stdlibs): Fuzz for String

[notJoon]

Description

I have implemented basic Fuzz functions in the testing package and a function to apply fuzzing to string data.

To transform string data, I used genetic algorithms. Additionally, I implemented a Uniform distribution to generate random values and then used the central limit theorem to approximate a normal distribution, thereby enabling the creation of random booleans in the random file.

In this PR, only the string type is handled. I plan to support other types in the future.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 47.55%. Comparing base (cb52ae7) to head (f2449f4).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1809      +/-   ##
==========================================
+ Coverage   44.86%   47.55%   +2.69%     
==========================================
  Files         459      388      -71     
  Lines       67625    61279    -6346     
==========================================
- Hits        30341    29144    -1197     
+ Misses      34743    29695    -5048     
+ Partials     2541     2440     -101     

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[zivkovicmilos]

Looks good 💯

Please check some comments I've left, otherwise it should be good to go

[zivkovicmilos]

@notJoon
The _test.cmd gnovm make directive is failing (tests). Please see what this is about before we merge 🙏

[notJoon]

@notJoon The _test.cmd gnovm make directive is failing (tests). Please see what this is about before we merge 🙏

Resolved it by using type assertion instead of using ufmt. thanks!