feat: Update dependencies and enhance admin role management

- Upgraded `golang.org/x/crypto` to v0.36.0 and other indirect dependencies to their latest versions.
- Added functionality to assign admin roles to users upon creation in the main application logic.
- Introduced new templates for admin role management, including forms for creating and editing roles.
- Removed deprecated admin tools template to streamline the admin interface.
- Added audit logging for role changes to improve tracking and accountability.

internal/db/audit_log.go

@@ -0,0 +1,46 @@
+package db
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"time"
+
+	"gorm.io/gorm"
+)
+
+// AuditLog represents an audit trail entry in the system
+type AuditLog struct {
+	gorm.Model
+	Action     string          `gorm:"size:50;not null;index"`
+	EntityType string          `gorm:"size:50;not null;index"`
+	EntityID   uint            `gorm:"not null;index"`
+	UserID     uint            `gorm:"not null;index"`
+	Details    AuditLogDetails `gorm:"type:json"`
+	Timestamp  time.Time       `gorm:"not null;index;default:CURRENT_TIMESTAMP"`
+}
+
+// AuditLogDetails is a custom type for storing audit log details as JSON
+type AuditLogDetails map[string]interface{}
+
+// Scan implements the sql.Scanner interface
+func (d *AuditLogDetails) Scan(value interface{}) error {
+	if value == nil {
+		*d = make(AuditLogDetails)
+		return nil
+	}
+
+	bytes, ok := value.([]byte)
+	if !ok {
+		return nil
+	}
+
+	return json.Unmarshal(bytes, d)
+}
+
+// Value implements the driver.Valuer interface
+func (d AuditLogDetails) Value() (driver.Value, error) {
+	if d == nil {
+		return json.Marshal(make(map[string]interface{}))
+	}
+	return json.Marshal(d)
+}