fix(library): fill libraryFixedIns{}.key in ftypes.Pnpm and ftypes.DotNetCore

[MaineK00n]

What did you implement:

When vulnerability was detected in pnpm-lock.yaml and *.deps.json, the key of libraryFixedIns in the report result was not set.
This PR fixes that.

Also, pnpm-lock.yaml and *.deps.json are added to the target of findLock.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

The key of libraryFixedIns in the report result is filled.

before

"scannedCves": {
  "CVE-2021-23566": {
    "cveID": "CVE-2021-23566",
    "confidences": [
      {
        "score": 100,
        "detectionMethod": "TrivyMatch"
      }
    ],
    "libraryFixedIns": [
      {
        "name": "nanoid",
        "fixedIn": "3.1.31",
        "path": "/home/mainek00n/github/github.com/MaineK00n/vuls/integration/data/lockfile/pnpm-lock.yaml"
      }
    ]
  },
  "GHSA-5crp-9r3c-p9vr": {
    "cveID": "GHSA-5crp-9r3c-p9vr",
    "confidences": [
      {
        "score": 100,
        "detectionMethod": "TrivyMatch"
      }
    ],
    "libraryFixedIns": [
      {
        "name": "Newtonsoft.Json",
        "fixedIn": "13.0.1",
        "path": "/home/mainek00n/github/github.com/MaineK00n/vuls/integration/data/lockfile/datacollector.deps.json"
      }
    ]
  }
}

after

"scannedCves": {
  "CVE-2021-23566": {
    "cveID": "CVE-2021-23566",
    "confidences": [
      {
        "score": 100,
        "detectionMethod": "TrivyMatch"
      }
    ],
    "libraryFixedIns": [
      {
        "key": "node",
        "name": "nanoid",
        "fixedIn": "3.1.31",
        "path": "/home/mainek00n/github/github.com/MaineK00n/vuls/integration/data/lockfile/pnpm-lock.yaml"
      }
    ]
  },
  "GHSA-5crp-9r3c-p9vr": {
    "cveID": "GHSA-5crp-9r3c-p9vr",
    "confidences": [
      {
        "score": 100,
        "detectionMethod": "TrivyMatch"
      }
    ],
    "libraryFixedIns": [
      {
        "key": ".net",
        "name": "Newtonsoft.Json",
        "fixedIn": "13.0.1",
        "path": "/home/mainek00n/github/github.com/MaineK00n/vuls/integration/data/lockfile/datacollector.deps.json"
      }
    ]
  }
}

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

[MaineK00n]

Since this NewDriver returns an error in cases other than the above, it is appropriate to return an empty string by default.

vuls/models/library.go

Line 62 in 139f3a8

scanner, err := library.NewDriver(s.Type)