Recognize the MICROSOFT VISUAL STUDIO ADD-ONs and EXTENSIONS license terms

## Short Description

It would be nice it ScanCode would recognize the license at https://www.nuget.org/packages/Microsoft.VisualStudio.Debugger.Contracts/17.2.0/License. Currently, there is not good match for it with an acceptable score, see this result for scanning that text:

```
{
"headers": [
{
"tool_name": "scancode-toolkit",
"tool_version": "30.1.0",
"options": {
"input": [
"MICROSOFT SOFTWARE LICENSE TERMS.txt"
],
"--json-pp": "-",
"--license": true
},
"notice": "Generated with ScanCode and provided on an \"AS IS\" BASIS, WITHOUT WARRANTIES\nOR CONDITIONS OF ANY KIND, either express or implied. No content created from\nScanCode should be considered or used as legal advice. Consult an Attorney\nfor any legal advice.\nScanCode is a free software code scanning tool from nexB Inc. and others.\nVisit https://github.com/nexB/scancode-toolkit/ for support and download.",
"start_timestamp": "2022-05-11T164411.890132",
"end_timestamp": "2022-05-11T164424.076692",
"output_format_version": "1.0.0",
"duration": 12.186588048934937,
"message": null,
"errors": [],
"extra_data": {
"spdx_license_list_version": "3.14",
"OUTDATED": "WARNING: Outdated ScanCode Toolkit version! You are using an outdated version of ScanCode Toolkit: 30.1.0 released on: 2021-09-24. A new version is available with important improvements including bug and security fixes, updated license, copyright and package detection, and improved scanning accuracy. Please download and install the latest version of ScanCode. Visit https://github.com/nexB/scancode-toolkit/releases for details.",
"files_count": 1
}
}
],
"files": [
{
"path": "MICROSOFT SOFTWARE LICENSE TERMS.txt",
"type": "file",
"licenses": [
{
"key": "ms-net-library-2019-06",
"score": 42.02,
"name": "Microsoft .NET Library License 2019-06",
"short_name": "MS .NET Library License 2019-06",
"category": "Proprietary Free",
"is_exception": false,
"is_unknown": false,
"owner": "Microsoft",
"homepage_url": "https://www.microsoft.com/en-us/web/webpi/eula/net_library_eula_ENU.htm",
"text_url": "",
"reference_url": "https://scancode-licensedb.aboutcode.org/ms-net-library-2019-06",
"scancode_text_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/licenses/ms-net-library-2019-06.LICENSE",
"scancode_data_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/licenses/ms-net-library-2019-06.yml",
"spdx_license_key": "LicenseRef-scancode-ms-net-library-2019-06",
"spdx_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/licenses/ms-net-library-2019-06.LICENSE",
"start_line": 20,
"end_line": 44,
"matched_rule": {
"identifier": "ms-net-library-2019-06.LICENSE",
"license_expression": "ms-net-library-2019-06",
"licenses": [
"ms-net-library-2019-06"
],
"referenced_filenames": [],
"is_license_text": true,
"is_license_notice": false,
"is_license_reference": false,
"is_license_tag": false,
"is_license_intro": false,
"has_unknown": false,
"matcher": "3-seq",
"rule_length": 1397,
"matched_length": 587,
"match_coverage": 42.02,
"rule_relevance": 100
}
},
{
"key": "ms-visual-studio-2017-tools",
"score": 21.39,
"name": "Microsoft Visual Studio 2017 Tools",
"short_name": "MS Visual Studio 2017 Tools",
"category": "Commercial",
"is_exception": false,
"is_unknown": false,
"owner": "Microsoft",
"homepage_url": "https://visualstudio.microsoft.com/license-terms/mlt552233/",
"text_url": "",
"reference_url": "https://scancode-licensedb.aboutcode.org/ms-visual-studio-2017-tools",
"scancode_text_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/licenses/ms-visual-studio-2017-tools.LICENSE",
"scancode_data_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/licenses/ms-visual-studio-2017-tools.yml",
"spdx_license_key": "LicenseRef-scancode-ms-visual-studio-2017-tools",
"spdx_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/licenses/ms-visual-studio-2017-tools.LICENSE",
"start_line": 45,
"end_line": 56,
"matched_rule": {
"identifier": "ms-visual-studio-2017-tools.LICENSE",
"license_expression": "ms-visual-studio-2017-tools",
"licenses": [
"ms-visual-studio-2017-tools"
],
"referenced_filenames": [],
"is_license_text": true,
"is_license_notice": false,
"is_license_reference": false,
"is_license_tag": false,
"is_license_intro": false,
"has_unknown": false,
"matcher": "3-seq",
"rule_length": 1501,
"matched_length": 321,
"match_coverage": 21.39,
"rule_relevance": 100
}
}
],
"license_expressions": [
"ms-net-library-2019-06",
"ms-visual-studio-2017-tools"
],
"percentage_of_license_text": 71.27,
"scan_errors": []
}
]
}
```

## Possible Labels

- new feature
- license scan

## Select Category

- [ ] Enhancement
- [x] Add License/Copyright
- [ ] Scan Feature
- [ ] Packaging
- [ ] Documentation
- [ ] Expand Support
- [ ] Other