BUG: Some metadata field (reference and cwe) are not in semgrep recommended format

[nitinNayar]

Identified 4 issues related to metadata field (reference and cwe) are not in semgrep recommended format :

• the semgrep rules have reference key. This should be references to be compliant with semgrep required format
• the semgrep rules references key should be a list. This is semgrep required format
• the semgrep rules have cwe key. This should be in the format CWE-XXX: CWE_TITLEto be compliant with semgrep required format
• the semgrep rules cwe key should be a list. This is semgrep required format

-- nitin (Semgrep Solution Engineering, EMEA)