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/event.go

@@ -0,0 +1,10 @@
+package core
+
+// Event represents a notable event or incident.
+type Event struct {
+	EventType   string `json:"event_type"`
+	Date        string `json:"date"`
+	Location    string `json:"location"`
+	Description string `json:"description"`
+	Severity    string `json:"severity"`
+}