feat!(cmd): add vulncheck

[MaineK00n]

If this Pull Request is work in progress, Add a prefix of “[WIP]” in the title.

What did you implement:

add vulncheck-kev

Type of change

Please delete options that are not relevant.

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

$ go-kev fetch vulncheck
INFO[08-19|19:47:30] Fetching VulnCheck Known Exploited Vulnerabilities 
INFO[08-19|19:47:31] Insert VulnCheck Known Exploited Vulnerabilities into go-kev. db=sqlite3
INFO[08-19|19:47:31] Inserting VulnCheck Known Exploited Vulnerabilities... 
2827 / 2827 [---------------------------------------------------------------------------------------] 100.00% 3502 p/s
INFO[08-19|19:47:32] CveID Count                              count=2827

$ go-kev server

$ curl -s http://127.0.0.1:1328/cves/CVE-2023-43177 | jq
{
  "vulncheck": [
    {
      "vendorProject": "crushftp",
      "product": "CrushFTP",
      "shortDescription": "CrushFTP prior to 10.5.1 is vulnerable to Improperly Controlled Modification of Dynamically-Determined Object Attributes.",
      "vulnerabilityName": "crushftp CrushFTP Improper Control of Dynamically-Managed Code Resources",
      "required_action": "Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.",
      "knownRansomwareCampaignUse": "Unknown",
      "cve": [
        {
          "cveID": "CVE-2023-43177"
        }
      ],
      "vulncheck_xdb": [
        {
          "xdb_id": "6d8fca1e85b0",
          "xdb_url": "https://vulncheck.com/xdb/6d8fca1e85b0",
          "date_added": "2023-12-27T00:06:20Z",
          "exploit_type": "initial-access",
          "clone_ssh_url": "git@github.com:the-emmons/CVE-2023-43177.git"
        }
      ],
      "vulncheck_reported_exploitation": [
        {
          "url": "https://go.recordedfuture.com/hubfs/reports/ta-2024-0321.pdf",
          "date_added": "2024-03-21T00:00:00Z"
        }
      ],
      "date_added": "2024-03-21T00:00:00Z"
    }
  ]
}

Checklist:

You don't have to satisfy all of the following.

• Write tests
• Write documentation
• Check that there aren't other open pull requests for the same issue/feature
• Format your source code by make fmt
• Pass the test by make test
• Provide verification config / commands
• Enable "Allow edits from maintainers" for this PR
• Update the messages below

Is this ready for review?: YES

Reference

[shino]

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