Add is_unknown flag for license class

Signed-off-by: akugarg <[email protected]>

Author: akugarg

src/licensedcode/models.py

@@ -108,6 +108,7 @@ class License(object):
     # if this is a license exception, the license key this exception applies to
     is_exception = __attrib(default=False)
 
+    is_unknown = __attrib(default=False)
     # SPDX key for SPDX licenses
     spdx_license_key = __attrib(default=None)
     # list of other keys, such as deprecated ones

src/scancode/api.py

@@ -238,6 +238,7 @@ def _licenses_data_from_match(
         result['short_name'] = lic.short_name
         result['category'] = lic.category
         result['is_exception'] = lic.is_exception
+        result['is_unknown']=lic.is_unknown
         result['owner'] = lic.owner
         result['homepage_url'] = lic.homepage_url
         result['text_url'] = lic.text_urls[0] if lic.text_urls else ''