Add a CWE array to the support #309

[SashaTail]

Add a CWE array to the support #309

[SashaTail]

I have been looking at the nvd 2.0 API, and I noticed that they have CWEs of the form NVD-CWE-{noinf\other} in addition to CWE-{num},
My implementation prioritizes CWEs of the normal kind, and if there are CWEs with number and NVD-CWE-{noinf\other}, the one with number will be selected.
I also noticed that multiple CWE sources have the same number, and they may be duplicated. I have also solved this problem.
In cases where only NVD-CWE-{noinf\other} has a vulnerability, we leave it alone.
I kept the further logic as it was.
Below I will give examples with the API and how it is now stored in mongo

[SashaTail]

NVD-API:
https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2016-9160

Mongo:
"cwe": ["CWE-111", "CWE-254"],

NVD-API:
https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2010-1428

Mongo:
"cwe": ["CWE-749"],

[SashaTail]

When merge please post the new version of the package on pypi.
I plan to support this in the near future for cve-search