V2 alpha - initial version (#172)

Initial alpha codebase for version 2 of WireGuard Portal.
This version is considered unstable and incomplete (for example, no public REST API)! 
Use with care!


Fixes/Implements the following issues:
 - OAuth support #154, #1 
 - New Web UI with internationalisation support #98, #107, #89, #62
 - Postgres Support #49 
 - Improved Email handling #47, #119 
 - DNS Search Domain support #46 
 - Bugfixes #94, #48 

---------

Co-authored-by: Fabian Wechselberger <wechselbergerf@hotmail.com>

internal/domain/audit.go

@@ -0,0 +1,20 @@
+package domain
+
+import "time"
+
+type AuditSeverityLevel string
+
+const AuditSeverityLevelLow AuditSeverityLevel = "low"
+const AuditSeverityLevelMedium AuditSeverityLevel = "medium"
+const AuditSeverityLevelHigh AuditSeverityLevel = "high"
+
+type AuditEntry struct {
+	UniqueId  uint64    `gorm:"primaryKey;autoIncrement:true;column:id"`
+	CreatedAt time.Time `gorm:"column:created_at;index:idx_au_created"`
+
+	Severity AuditSeverityLevel `gorm:"column:severity;index:idx_au_severity"`
+
+	Origin string `gorm:"column:origin"` // origin: for example user auth, stats, ...
+
+	Message string `gorm:"column:message"`
+}