refactor: reorganize OSINT types — genéricos a core, específicos en cybersecurity

Mueve tipos genéricos (Person, Organization, Location, Email, Phone, Document,
Domain, Event, SocialMedia) de cybersecurity a core. Mantiene en cybersecurity
solo los específicos de seguridad (CryptoWallet, IPAddress, Malware, Vulnerability).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

functions/core/phone.go

@@ -0,0 +1,9 @@
+package core
+
+// Phone represents a phone number of interest.
+type Phone struct {
+	Number      string `json:"number"`
+	CountryCode string `json:"country_code"`
+	Carrier     string `json:"carrier"`
+	PhoneType   string `json:"phone_type"`
+}