feat(config): added config to avoid exit code 1 for scan failure

[utsavmaniyar]

This PR is addressing issue #101 which talks about having difficulty to exit the process with status code exit : 0. As part of these changes, I have added -ignore-failure configuration and set the default value to false. Meaning this is non breaking change and provide user a way to configure the final exit status upon scan completion.

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Usage Example:

go run go-earlybird.go --path=/Users/hero/repo1 --fail-severity low --ignore-failure=true

Output

Finding # 1:
        Code #: 4059
        Filename: /Users/hero/repo1/temp/src/test/resources/secrets/sample.jks
        Caption: Java keystore file
        Category: key
        Line #: 0
        Value: sample.jks
        Severity: medium
        Confidence: high
        Labels: None
        Associated CWEs: CWE-312/CWE-321

        ***** Total issues found *****
            1 Java keystore file
            1 TOTAL ISSUES
2024/02/06 07:43:15 
303 files scanned in 483.806286ms
2024/02/06 07:43:15 
114 rules observed
Scan detected findings above the accepted threshold -- Failing.

[github-actions]

🎉 This PR is included in version 4.1.0 🎉

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