Implement findCpes API to query CPEs from CVE Search

[melbiialy]

Description

Add findCpes Thrift method to search CPEs by vendor, product and version.

Steps followed and expected result

Steps:

1. Call CveSearchService.findCpes(vendor, product, version) via Thrift.
2. Provide vendor and product (e.g. "apache", "httpd").
3. Provide version for filtering (e.g. "2.4"), or "" / "*" for all CPEs.

Expected result:

• Returns a set of CPE strings matching the given vendor and product.
• If version is provided, only CPEs with that version are returned.
• If version is empty or "*", all matching CPEs are returned.
• Null or empty vendor/product returns an empty set.
• IOException from the CVE Search API is wrapped in TException.

Example:

• findCpes("apache", "httpd", "2.4") → Set of CPEs like cpe:2.3:a:apache:httpd:2.4:...
• findCpes("apache", "httpd", "*") → Set of all Apache httpd CPEs