feat(gnovm): add fuzz and fuzz CLI

[rlaau]

This PR introduces fuzzing functionality and a corresponding CLI for the GnoVM. The fuzzing can be executed using the following command:

cmd: gno test [filename] -fuzz [function_name] -i [iterations] -v [verbose]

Key Points to Note:

1. Coverage Implementation Pending:
   The current fuzzing implementation does not include coverage-related functions. To achieve complete fuzzing functionality, coverage support must be added in future updates.

2. Iteration-Based Fuzzing:
   Unlike Go's fuzzing mechanism, which supports a timeout parameter, Gno's fuzzer uses -i to specify the number of iterations.

3. Function Signature Requirement:
   The function passed to f.Fuzz in Gno must strictly follow the signature:
   func(*testing.T, args ...interface{}).

Fuzzing Input/ Output example:

1. Input example:
   cmd: gno test mock_test.gno -fuzz Fuzz
2. output example:
   bash
   --Failing input: ["/xeb", 560]

Example Usage Image:

Example Usage Code:

package testing

import (
	"testing"
	"unicode/utf8"
)

func TestMock(t *testing.T) {
	t.Errorf(`New("abc") == New("abc")`)
	println("hello")
}

func FuzzMock(f *testing.F) {
	f.Add("apple hello", int(400002131323))
	f.Add("rainy day", int(98401132231331))
	f.Add("winter comes", int(12349123123))
	f.Fuzz(func(t *testing.T, orig ...interface{}) {
		v, ok := orig[0].(string)
		if !ok {
			panic("dont match")
		}
		i, ok2 := orig[1].(int)
		if !ok2 {
			panic("dont match")
		}
		rev := testing.Reverse1(v)
		doubleRev := testing.Reverse1(rev)
		if v != doubleRev && i > 300 && i < 500 {
			t.Errorf("Before: %q, after: %q", orig, doubleRev)
		}
		if utf8.ValidString(v) && !utf8.ValidString(rev) && i > 300 && i < 1000 {
			t.Errorf("Reverse produced invalid UTF-8 string %q", rev)
		}
	})
}

[Gno2D2]

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[notJoon]

It seems you commit the wrong files in pkg/mod directory. please remove those files.

[rlaau]

It seems you commit the wrong files in pkg/mod directory. please remove those files.

Thank you for letting me know, I deleted the file.

[notJoon]

I'll have to give it some more time and check it out again slowly.

[notJoon]

Also, if this PR is still in progress, please convert the status to Draft.

[rlaau]

Also, if this PR is still in progress, please convert the status to Draft.

I just checked that there were replies. I will re-open the pr after solving everything.

[jefft0]

Removed the review/triage-pending label while this PR is Draft.

[rlaau]

Removed the review/triage-pending label while this PR is Draft.

I modified the annotation and coding convention to suit.